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 4140-01-512-3270
NSN 7035-01-521-2384
NSN 5920-01-254-9978
NSN 2925-01-525-8212
NSN 5835-00-155-1379
NSN 5998-00-460-0453
NSN 6685-01-420-8586
NSN 5920-01-425-7496
NSN 5990-00-836-7962
NSN 5855-01-162-5251
NSN 6145-01-031-9008
NSN 2925-01-112-8782