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 5965-01-651-3775
NSN 5935-01-415-6864
NSN 5925-00-734-1441
NSN 6150-00-984-1892
NSN 7035-01-391-7470
NSN 5915-00-966-4661
NSN 6610-01-023-1816
NSN 5920-01-412-1080
NSN 7035-01-433-3547
NSN 6130-01-435-3430
NSN 7035-01-183-7550
NSN 5996-00-937-8100