"Brass movement with phosphor bronze Bourdon tube. Grade B #410 stainless steel. 1/4in. NPT 316 brass male connection. Grade B accuracy. For use with air, gas, oil or water. Black enameled aluminum pointer, white background and acrylic window. Glycerin filled. Pointer Black enameled aluminum, Accuracy Grade B, Dial White aluminum, Gauge Diameter in. 2 1/2, Bourdon Tube Phosphor Bronze, Connection Material 316 Brass, Range PSI 0-15,000, Window Material Acrylic, Connection Size in. 1/4 Male NPT, Max. PSI 15,000, Movement Brass, Case Material Grade B #410 Stainless Steel, Fill Material Glycerin, Recommended Use Air, gas, oil, water."