Dial size 63mm, 100mm & 150mm Accuracy + 2% / + 1% of full scale Bourdon Brass / phosphor bronze / ss316 / monel Movement Brass / s. S. 304 / s. S. 316 Socket Brass / ss316 / ss316l / monel Case & bezel S. S. 304 crimp type / snap action bayonet type Range Pressure up to 1400 kg/cm , vacuum & compound ranges. Joints S. S. Bourdon tube tip and the socket ends are argon arc welded and phosphor bronze bourdon tubes are silver brazed / soldered. Bourdon tubes are heat-treated and stress relived. Window Acrylic glass / safety glass Mounting Direct with bottom entry / direct with back entry flush panel with back entry (three panel / bracket) surface with bottom entry Thread connection 1/8", 1/4", 3/8", 1/2" bsp / bspt / npt (m)