6625-00-962-6074 (FL4D)
NSN 6625-00-962-6074 (NIIN 00-962-6074) is an electrical frequency meter in Federal Supply Class 6625, Electrical And Electronic Properties Measuring And Testing Instruments. Manufacturer part number FL4D.
NIIN assigned January 1962; DEMIL A (none required). Supersedes 6625-00-816-9347 (2009).