No other part numbers with same form, fit, and function found.
A tachometer using solid state and/or vacuum tube circuitry.
NSN 5920-01-466-1485
NSN 5855-01-067-8841
NSN 6685-00-816-8838
NSN 5965-01-626-5775
NSN 5960-00-725-5380
NSN 6135-01-079-7852
NSN 6240-00-391-6402
NSN 6130-01-372-5538
NSN 5960-01-266-1011
NSN 5999-01-589-6120
NSN 2925-00-872-4474
NSN 6150-00-236-5069