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 5930-01-564-2327
NSN 5905-00-615-9391
NSN 6610-01-112-0447
NSN 5910-01-167-6992
NSN 6145-01-522-8304
NSN 6645-00-764-0412
NSN 7035-00-215-3272
NSN 6220-01-488-7719
NSN 5915-00-420-8370
NSN 4140-01-513-7636
NSN 5930-00-125-5520
NSN 6320-00-331-7138