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 6610-01-477-6476
NSN 6150-00-930-3532
NSN 5998-01-193-8940
NSN 6650-01-068-5021
NSN 6220-01-184-0228
NSN 7035-00-337-8745
NSN 5960-00-939-8124
NSN 6650-00-283-0978
NSN 5999-01-440-8638
NSN 5975-01-605-1246
NSN 2925-01-182-0227
NSN 5835-01-359-2575