Sensitivity is one angular mi (3.375 minutes) per one-sixteenth movement of bubble
A precision instrument used to determine a horizontal plane in all directions on one setting. It is centrally located in relation to the periphery of the top of the item, for centering the bubble. The item may be mounted to a cylinder.
Classification: Drawing, marking-out or mathematical calculating instruments, nesoi
NSN 4140-01-519-9343
NSN 5905-00-375-6342
NSN 5835-00-187-1481
NSN 6145-01-647-0800
NSN 5950-01-282-6932
NSN 5985-01-553-0672
NSN 5999-00-275-0401
NSN 5910-01-008-6757
NSN 4140-00-904-5841
NSN 6620-01-199-8580
NSN 5835-01-143-9143
NSN 5915-01-506-3910