Pressure Gauge These instruments have been designed for laboratories, instrument testing or recalibration facilities and in other applicatione where accuracy and repeatability are of primary importance. Whenever is raguested the conformity to safety normatives EN 837-1 and ANSI B40. 1 is possible to use this models. The wetted parts in beryllium copper to permits higher accuracy, while the ones in AISI 316L of models 01.15 and OL.16 permits to use them in worse Working conditions dstermined by aggressive ambients or process fuids. Each instrument is supplied with a calibration certificate.