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 6320-00-450-7014
NSN 5950-01-323-4882
NSN 6220-00-027-5303
NSN 5945-01-086-0860
NSN 6135-00-862-2921
NSN 5985-01-281-6571
NSN 4140-00-198-4961
NSN 6645-01-484-9847
NSN 6110-00-442-3497
NSN 5915-01-563-7100
NSN 5905-00-690-8706
NSN 6150-01-327-2156