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.
Part #: 23474653
Part #: 23474661
Part #: 23474570
Part #: 23474901