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 5855-01-386-7323
NSN 4140-01-273-0196
NSN 6150-01-507-7828
NSN 5920-01-617-8857
NSN 6240-00-372-4841
NSN 6645-01-452-9495
NSN 5985-01-444-5108
NSN 5910-01-017-4315
NSN 6620-00-139-3800
NSN 5996-00-863-1359
NSN 2925-00-578-4068
NSN 6620-00-483-1407