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 6685-00-176-5883
NSN 6620-01-372-4168
NSN 5998-01-541-6775
NSN 5996-01-383-0520
NSN 5930-00-173-4981
NSN 5910-00-233-6104
NSN 6105-01-509-7399
NSN 5925-00-396-2412
NSN 5996-01-398-8197
NSN 6610-01-394-4944
NSN 6610-00-551-3610
NSN 5965-00-378-3403