For sale is a New U.S. Gauge Co. (USG) Spec.169324, Type 5HK75 Pressure Gauge. 300 PSI Maximum pressure reading. 2-5/8" Diameter face. 1/4" NPT Connection. Glycerin filled (you can see that the glycerin got a bit frothy before I shot the pictures; the sight-glass itself is perfectly clean and transparent). NOTE: This gauge is a New, Unused and Never Installed item. Comes with OEM cardboard box.