• Hermetically sealed transparent acrylic chamber for unobstructed view of instrument being tested.

• Capable of pressure and vacuum testing using the included diaphragm pump.

• Soft seat control valve for precise metering of pressure/vacuum levels.

• Barbed hose fitting upstream of control valve enables monitoring of pressure/vacuum inside the chamber using an external reference standard.

• Restricted orifice couplings prevent rapid changes in pressure/vacuum from damaging instruments under test.

• Integral relief valve protects kit and instruments under test from accidental overpressurization.

• Adjustment tool with top-mounted knob permits convenient null indicator needle adjustments without opening the chamber or disturbing the test setup.

• Adjustable feet allow chamber to be leveled for maximum accuracy.

• Simple, easy-to-use design.