National Item Identification Number
00-223-9580
002239580
5220-00-223-9580
5220002239580
National Stock Number
Item Name
LEVEL,PRECISION,MASTER
Federal Supply Class
5220
Description
A precisely calibrated instrument used as a master reference standard to establish an absolute horizontal plane. The metal base is seasoned and heat treated or otherwise specially treated to insure maximum stability, and is accurately machined and scraped to the true plane on the contact surface. The top plate is of nonconductive heat insulating material. It has a very sensitive vial graduated to indicate a variation of 0.0005 inch (0.0127 mm) per foot (0.3048 m) in a horizontal plane. It may have a cross level vial to assist in setting the true horizontal by showing position laterally.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
Required Categories
MATERIAL
DESIGN TYPE
ADJUSTABILITY
ADJUSTABLE CHARACTERISTICS
OVERALL OUTSID
Required Description
IRON
SINGLE FACE
ADJUSTABLE
DEG OF PITCH
18 IN. LG
LEVEL
1
INCLUDED
ONE