No other part numbers with same form, fit, and function found.
A tachometer designed to operate by harmonic action of a reed(s).
NSN 5999-00-344-1909
NSN 5930-01-112-6694
NSN 5935-01-344-3009
NSN 5895-01-439-3334
NSN 5915-01-266-7855
NSN 6135-01-387-0754
NSN 5965-01-213-7256
NSN 5960-01-299-5832
NSN 5998-00-768-5251
NSN 5915-01-421-1818
NSN 4140-01-106-4604
NSN 5920-00-131-3226