6680-01-512-6765 (S6226-R7-MMC-010 FIG 7-3-40 TMS6226R7MMC010FIG7340)
6680-01-512-6765 is equivalent to manufacture part number 2921010. It is a liquid sight indicator 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.