In support of the "VR" safety relief valve and "R" stamp program where gauge calibration is critical, we also offer gauge calibration using the latest technology with a DRUCK deadweight tester. Accuracy to within .005 of full scale and gauge pressure ranges from 10 psi to 5,000 psi. Calibration reports provided with sticker affixed. Gauges are calibrated and traceable to N.I.S.T. For quality calibration, contact the valve division personnel (See contact page)