National Item Identification Number
National Stock Number
Federal Supply Class
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.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
8 IN. O/A LG