6680-00-942-7113 (SG6-21000RPM)
6680-00-942-7113 is equivalent to manufacture part number SG6-21000RPM. It is a chrono-tachometer and is classified under Federal Supply Class 6680 (6680 - Flow and Level Measuring Instruments), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 6680 - Flow and Level Measuring Instruments and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.