Ssr name is sight glass
An item so designed to have a portion or all of its body transparent to permit the visual examination of the amount of liquid in a pressure vessel, boiler, evaporator, still, processing tank, reservoir, pipe tubing line, and the like, and/or to determine the flow to a lubricated part. It may also be provided with an element that changes colors to indicate changes in moisture content. The item may have a means for refilling. Excludes indicator, liquid quantity and indicator, rate of flow.
Classification: Instruments and apparatus for measuring or checking the flow or level of liquids, nesoi
NSN 5930-01-238-4686
NSN 6650-01-391-3334
NSN 5965-01-323-0501
NSN 6130-01-620-9241
NSN 6320-00-456-0836
NSN 6150-00-310-8531
NSN 5985-01-444-5108
NSN 5930-01-472-6391
NSN 6130-01-082-8577
NSN 6110-00-806-5459
NSN 6130-00-440-9057
NSN 6105-00-011-8083