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 5998-01-512-6438
NSN 6130-00-420-2412
NSN 5975-01-442-8767
NSN 5996-01-591-6087
NSN 5935-01-527-7228
NSN 5910-00-132-6070
NSN 5999-01-432-4624
NSN 5965-00-043-3463
NSN 4140-00-540-4230
NSN 6130-01-575-1468
NSN 5835-01-424-0054
NSN 6240-01-023-4623