Pressure Gauge Model: PMX Favourite This Equipment Description AISI 304 SS, AISI 316SS Lamited Safety Glass Model: PMX Dial Size: 1.5″ (40mm), 2″ (50mm), 2.5″ (63mm), 4″ (100mm) Bourdon Material : AISI 304 Accuracy: +-1.6% Bayonet lock type IP 65 Diaphragm gasket: PTFE. Details