A single component specifically designed to make a record of sonic variations.
NSN 5999-00-690-4619
NSN 4140-01-590-7161
NSN 5835-00-302-5296
NSN 6150-00-945-2251
NSN 6240-00-403-9849
NSN 5930-01-161-0741
NSN 6220-01-432-0089
NSN 6130-01-536-5384
NSN 6610-01-494-6319
NSN 5985-00-835-0391
NSN 6620-00-806-9303
NSN 5985-01-225-7612