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 5998-00-467-5774
NSN 6240-01-511-3754
NSN 5945-01-364-8496
NSN 6685-00-824-1073
NSN 5945-01-148-8832
NSN 5945-01-166-0403
NSN 6320-00-925-0558
NSN 5965-00-403-4287
NSN 6105-00-141-0300
NSN 6150-00-518-1402
NSN 5996-01-644-5405
NSN 5930-00-819-3001