National Item Identification Number
00-241-3609
002413609
5220-00-241-3609
5220002413609
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)
57163
19200
Reference Numbers (Part Numbers)
MILL15682TYPE4
199
7902552
Required Categories
MATERIAL
DESIGN TYPE
ADJUSTABILITY
ADJUSTABLE CHARACTERISTICS
OVERALL OUTSID
Required Description
IRON, CAST
SINGLE FACE
ADJUSTABLE
TRUE VIALS
15 IN. LG O/A
LEVEL
1
SINGLE