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 6145-00-130-8078
NSN 5998-00-101-6886
NSN 6105-00-097-8131
NSN 6610-00-151-8074
NSN 6110-00-498-6868
NSN 5950-01-511-5268
NSN 5965-01-408-5990
NSN 5835-01-515-6537
NSN 5999-01-430-4997
NSN 6220-00-115-5842
NSN 5945-00-980-9860
NSN 5915-01-155-6230