A portable gauge and transmitter calibration system that is very conveniently use on-site, It is compact, easily operation, reduces calculations errors and has a 0.02% full scales accuracy up to 370 PSI (25 bar) when using a ConST273 as a reference. It comes with a weather-proof kitbag that can protect instruments well. 

Pressure range: -95% vacuum up to 25 bar by pneumatic
Whole system weighs  12 lbs/5.5 kg.