Construction featuresdial size 100mm & 150mm. Accuracy One percent of total scale. Snap-action bezel and case made of IP65 rated Stainless steel of type 304 bayonet type. Movement brass / ss 304. Pressure SS 316 element diaphragm / compact capsule. Dial white aluminum finished with a 270-degree black gradient scale marking. Pointer aluminum / brass construction, No adjustments needed / micro adjustment feature adjustment pointer. Window toughened / safety glass. Over overload safeguard rated at 125% of full scale deflection for 150 kg/cm / 115% of f. S. D. Designed for over 150 kg/cm . Mounting direct bottom entry. Scale range for schaffer diaphragm 760mmhg vacuum, Compound, 0. 6 to 21 kg/cm . For low pressure diaphragm 250mmwc to 6000 mmwc. For compact capsule 250mmwc to 6000mmwc. Upper chambermaterial SS 304 Alloy carbon steel powder coated. Diaphragm material brass / ss 316, Teflon coating can provided if required.