An electronic subassembly designed to be plugged into one or more basic pieces of test equipment to extend the capabilities of the basic instrument. the basic instrument cannot function without one or more plug-in units (as required) in position.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5998-01-467-2423
NSN 5999-01-565-2212
NSN 5915-01-653-5981
NSN 6320-01-311-3286
NSN 4140-00-419-0631
NSN 6610-01-240-6629
NSN 5975-00-111-3208
NSN 5950-01-007-5059
NSN 5996-01-546-2025
NSN 6145-01-469-4254
NSN 6685-00-398-0341
NSN 6685-01-519-9160