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 6610-01-503-0153
NSN 6220-00-836-9316
NSN 5905-01-336-6297
NSN 5950-01-512-1973
NSN 6105-00-828-9230
NSN 5965-01-032-9146
NSN 6650-01-141-5999
NSN 5975-01-186-3956
NSN 5990-01-313-5543
NSN 5935-01-063-0268
NSN 5835-00-445-5539
NSN 6150-01-528-1372