MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Tungsten Filaments, 3/4 inch Tube Port, Stainless Steel Encased. MKS PN: 355001-TA The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS Granville-Phillips 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Yttria-Coated Iridium Filaments, Stainless Steel Encased, 3/4 inch Tube Port. MKS PN: 355001-YA The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

NEW MKS GP 355 Micro-Ion Vaccum Gauge, w/ Dual Tungsten Filament 1.0 inch Port Compression PN PN 355001-TJThe World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings

NEW MKS GP 355 Micro-Ion Vaccum Gauge, Dual Yttria-coated Iridium Filaments 1.0 inch Port Compression PN 355001-YJThe World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings

MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Tungsten Filaments, NW KF-16 Fitting, Stainless Steel Encased. MKS PN: 355001-TD The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Yttria-Coated Filaments, NW KF-16 Fitting, Stainless Steel Encased. MKS PN: 355001-YD The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS Granville-Phillips 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Tungsten Filaments, Stainless Steel Encased, KF-25 Fitting MKS PN: 355001-TE The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS Granville-Phillips 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Yttria-Coated Iridium Filaments, Stainless Steel Encased, KF-25 Fitting. MKS PN: 355001-YE The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Tungsten Filaments, NW KF-40 Vacuum Fitting, Stainless Steel Encased. MKS PN: 355001-TK The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Tungsten Filaments, 1/2 inch Male 8 VCR Vacuum Fitting. MKS PN: 355001-TH The World’s Smallest Ionization Gauge. The Micro-Ion gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Yttria-Coated Iridium Filaments, NW KF-40 Vacuum Fitting, Stainless Steel Encased. MKS PN: 355001-YK The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS GP 355 Micro-Ion Bayard-Alpert Hot Cathode Vacuum Gauge, Dual Yttria-Coated Iridium Filaments, 1/2 inch Male 8 VCR Fitting. MKS PN: 355001-YH The World’s Smallest Ionization Gauge. The Micro-Ion gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS Granville Phillips 355 Micro-Ion Vaccum Gauge, (UHV Range) w/ Dual Tungsten Filament CF 1.33 in. MKS PN: 355001-TF The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

MKS GP 355 Micro-Ion Vaccum Gauge, Dual Yttria-Coated Iridium Filament, CF 1.33 in. (UHV Range). MKS PN: 355001-YF The World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings MKS 355 Micro-Ion gauges are available with these fittings:

NEW MKS Granville Phillips 355 Micro-Ion Vaccum Gauge, (UHV Range) w/ Dual Tungsten Filament CF 2.75 in., PN 355001-TGThe World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings

NEW MKS Granville Phillips 355 Micro-Ion Vaccum Gauge, (UHV Range) Dual Yttria-coated Iridium Filaments CF 2.75 in., PN 355001-YGThe World’s Smallest Ionization Gauge. The Micro-Ion Gauges occupy less than 10% of the volume of conventional glass gauge or nude gauges, allowing easy installation in complex, tightly packed vacuum systems. With high performance patented dual ion collector design increasing electron path length and ion collection efficiency providing high performance in a small volume. Having long term stability, the grid windings are attached to the grid posts every 180° for greater sensitivity and stability. The dual filaments helps provide long gauge life. Unscheduled downtime is avoided by using the second filament as a back-up until the gauge can be replaced during regular maintenance procedures. These gauges have cooler operation, at only 8% of the power consumption of a traditional glass or nude gauge, the Micro-Ion Gauge generates significantly less heat-related process or experiment disturbances. Port shield protects the electrode assembly from damage during assembly or vacuum chamber maintenance, and provides a stable electrical environment for improved measurement performance. They have all-metal enclosures which prevents grid and filament damage during mounting and eliminates the risk of glass breakage. These gagues come with a wide selection of vacuum fittings, making installation very simple in your vacuum systems. Works with Vacuum Controller: Granville Phillips Models 358 Micro-Ion Gauge Vacuum Controller.Benefits of the Micro Ion Gauges: World''s Smallest Ion Gauge High Performance Long Term Stability Dual Filaments Cooler Operations Port Shields All Metal Enclosure Wide Selection of Vacuum Fittings