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 5960-01-262-5048
NSN 5935-01-141-5639
NSN 5920-01-318-4111
NSN 5950-01-227-5363
NSN 6105-01-564-9442
NSN 5925-00-868-4313
NSN 6650-00-382-6080
NSN 5905-01-479-5375
NSN 6110-01-147-5936
NSN 5996-01-542-9499
NSN 5835-01-464-2662
NSN 5950-01-506-7684