No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 5930-01-349-0999
NSN 6150-01-406-5400
NSN 6135-00-900-2139
NSN 5905-01-152-7193
NSN 6650-00-751-9958
NSN 5998-01-622-2826
NSN 5998-01-431-8084
NSN 5910-01-600-2613
NSN 5960-00-252-3396
NSN 6610-00-500-6944
NSN 6130-01-371-0415
NSN 5990-01-110-8979