This is a standard Ingersoll Rand compressor pressure gauge. It has a maximum pressure read of 160PSI and is used on a number of IR's smaller stationary air compressors. 1/8" NPT.
For use with the following Ingersoll Rand air compressor model numbers:
Part #: 24457657
Part #: ST25-150
Part #: 23474661
Part #: 70243399
Part #: 85582229
Part #: 38436721
Part #: 32170979
Part #: 20100277
Part #: 20100285