No other part numbers with same form, fit, and function found.
A tachometer designed to operate by harmonic action of a reed(s).
NSN 5985-00-987-9019
NSN 6105-00-007-0424
NSN 6130-00-255-2809
NSN 6650-01-198-7601
NSN 5920-01-410-7740
NSN 6610-01-244-7192
NSN 6220-01-288-3058
NSN 6620-00-365-5454
NSN 6685-00-248-0078
NSN 5960-00-182-7375
NSN 6240-00-151-7642
NSN 5950-00-188-3214