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 5998-01-425-3851
NSN 5950-00-952-5022
NSN 5855-00-688-9954
NSN 6110-01-506-7141
NSN 6105-01-596-4439
NSN 5999-01-547-5292
NSN 5998-01-038-9827
NSN 6620-01-272-4746
NSN 6610-01-287-9814
NSN 6135-00-180-5125
NSN 5935-01-615-2605
NSN 5855-01-476-4219