Ge Sensing manufactures Combined Pressure & Vacuum Deadweight Tester. Ge Sensing offers barometric pressure transducer, differential pressure gauge, high performance level pressure sensor, high precision portable pressure calibrator, low differential pressure sensor etc in wide ranges. Combined Pressure & Vacuum Deadweight Tester provide calibrations from 1-30 inHg vacuum and 3-500 psi in one extremely accurate yet easy to use primary standard.