The Martel T140 pressure calibrator / manometer is available in several ranges including 10 and 200" H2O as well as 30, 100, 300, and 3,000 PSI. Operation of the Martel T140 pressure calibrator is made easy through the use of a sealed membrane keypad with simple controls. When combined with a Martel MECP100 Hand Pump, the Martel T140 pressure calibrator kit makes a great package to handle your pneumatic calibration requirements.