Detailed Product Description Pressure gauge:Case sizes: 1.5", 2", 2.5", 3", 4" and 6" Case material: stainless steel case Bezel material: stainless steel bezel, stainless steel roll ring (or bayonet threaded ring) Tube and socket: 316 stainless steel Movement: stainless steel Connection: 1/4" 1/8" 3/8" & I/2"NPT. BSP. PT dependent on model and size, bottom, back and front flange Available ranges: ...