A very sensitive instrument used to establish accurately the horizontal plane. It consists of a machined and scraped metal base with an involute groove or flat base. It has an adjustable or nonadjustable vial which may be graduated or plain. It has no mounting facilities.
Classification: Handtools (including glass cutters) and parts thereof, nesoi, of basemetal
NSN 5999-01-481-9355
NSN 6105-01-306-4618
NSN 6130-01-434-7463
NSN 7035-01-355-7284
NSN 6220-01-649-2418
NSN 5975-00-062-4758
NSN 6320-00-845-3261
NSN 6105-00-816-8496
NSN 5925-01-230-0410
NSN 5910-01-399-8737
NSN 5925-01-391-4986
NSN 5945-00-495-9254