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 5925-00-900-5354
NSN 6105-01-116-3439
NSN 5835-01-131-2027
NSN 5990-01-360-2900
NSN 5990-01-465-9235
NSN 6610-01-364-0294
NSN 2925-01-327-3069
NSN 6110-01-596-2865
NSN 5905-00-282-2504
NSN 2925-00-765-4871
NSN 5895-00-935-8183
NSN 5998-01-496-5092