Dwyer PTGD-SC02A is an accurate and versatile piston-type differential pressure gauge that can handle temperatures up to 176°F. With a ±2% full-scale accuracy and compatibility with both gases and liquids, it can be mounted in any position. Its wetted materials include aluminum or 316 SS for the body, aluminum or 316 SS for the piston, and 302 SS for the spring. It features various pressure limits depending on the body material, with 1/4" female NPT end connections as standard and 1/4" female NPT back or bottom connections available. The gauge comes in two dimensions, 2.5" (63 mm) or 4.5" (115 mm), and features an acrylic window.