2-1/2" Stainless steel case and ring with shatter-resistant acrylic window 1/4" NPT male threaded brass connection as shown Quality construction with glycerin-filled bronze movement Accuracy to ASME B40.1 Grade B ± 3-2-3% Dual black/blue on white scales (PSI and Bar/Kpa)

Herco Brand industrial pressure gauge. Brass movement with phosphor bronze Bourdon tube. 410 stainless steel case and ring. 1/4" NPT 316 brass male connection as shown. For use with air, gas, oil or water. Black enameled aluminum pointer, white background and acrylic window. Glycerin filled.