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 5990-01-458-9576
NSN 5915-01-447-3151
NSN 6320-00-977-3930
NSN 6145-01-023-1526
NSN 6645-00-012-5834
NSN 5945-00-196-3734
NSN 5930-01-029-6719
NSN 5935-01-177-2879
NSN 6620-00-506-0112
NSN 4140-01-360-4369
NSN 5998-01-037-0405
NSN 5835-00-148-9719