Models BH1 or BA1 : Accuracy ±0.1% An idustrial deadweight tester for routine and regular calibration of process sensors and gauges. Rugged design, simple to use to meet the most demanding operations. Read more Models BH3 / BH2 and BA3 / BA2 : Accuracy to ±0.01% High performance dead weight, easy of use, robust design providing solutions for a wide number of applications. The BH3 and BA3 range have built in motor drives with electronic piston position indiation. Read more Models BH4 or BA4 : Accuracy to ±0.005% A very high performance range of dead weight testers with integrated computer featuring dynamic display of the piston position and precisely calculated pressure corrected for temperature, atmospheric pressure and humidity. The computer also features full documentation of the unit under test results with output to Excel format. Read more