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 5925-01-380-9887
NSN 6145-01-521-6487
NSN 6150-01-421-2543
NSN 5910-00-454-6428
NSN 5965-00-092-8841
NSN 5950-01-603-1584
NSN 5965-01-554-7490
NSN 5935-01-060-4489
NSN 5935-01-347-8984
NSN 6685-01-591-9918
NSN 6650-00-259-2605
NSN 5990-00-622-1010