Pressure Gauge,tire pressure gauge,pressusre meter 1.Case diameter: 40, 50, 63, 80 , 100mm 2.Connection: 1/2, 1/4, 1/8 , 3/8 Pressure Gauge,tire pressure gauge,pressusre meter,gauge Key Specifications:With plastic case With red pointer on window Red pointer can be adjusted Case materials: plastic and black ABS Bourdon tube: copper alloy Connection material: brass Movement core: brass Case ...