Apparatus and method for measuring pressures and indicating leak

Apparatus for and method of measuring composition and...

Cold cathode device and vacuum gauge using same

Cold cathode ion gauge

Cold cathode ionization vacuum gauge with guard ring

Cold-cathode ionization manometer having a longer service...

Cold-cathode ionization vacuum meter with auxiliary ignition sys

Device for measuring the internal pressure of an operationally b

Discharge initiating means for cold cathode discharge ionization

Electronic device for feeding ion pump

Electronic portion of an ion gauge with ion collectors bowed...

Hot cathode ionization pressure gauge

Hot-cathode ionization pressure gauge including a sequence of el

Hot-cathode ionization pressure gauge including a sequence of el

Ionization gauge

Ionization gauge

Ionization gauge and method of using and calibrating same

Ionization gauge and method of using and calibrating same

Ionization gauge and method of using and calibrating same

Ionization gauge and method of using and calibrating same