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 6620-01-212-4298
NSN 5998-01-487-3833
NSN 5945-00-494-5091
NSN 5905-01-130-5252
NSN 5945-01-400-5928
NSN 6685-01-020-7235
NSN 5999-00-952-4293
NSN 6150-00-075-4965
NSN 5960-00-715-9227
NSN 5950-00-150-4772
NSN 5999-01-373-5717
NSN 6320-01-585-8468