Ingersoll Rand 32499816 OEM Pressure Gauge, 0-300psi, 1/4" NPT Threads
32499816 is an OEM gauge from Ingersoll Rand. This has 1/4" NPT threads and reads from 0-300psi.
32499816 was most commonly used on the Ingersoll Rand T30 style air compressors. This was often threaded directly into a tank or onto the manifold of the pressure switch.