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 5996-00-589-9943
NSN 5999-01-027-1810
NSN 5855-00-135-9064
NSN 6650-00-781-3192
NSN 6110-00-210-4235
NSN 5960-01-452-1907
NSN 5925-00-021-8822
NSN 5990-00-283-1324
NSN 6320-01-252-2307
NSN 6320-00-379-4695
NSN 5945-00-575-3566
NSN 6620-01-350-5103