Imicrometer knob is rotated to centre a graduation line of the main scale to the index pointer; the indicated angle is the sum of the two scale readings. For horizontal use an accessory base is required
An optical instrument consisting of a sighting tube and a quadrant scale plate, used to ascertain the angle of elevation of an object.
Classification: Levels (surveying)
NSN 4140-01-218-6674
NSN 6650-01-429-9242
NSN 6135-01-468-6491
NSN 6620-01-559-7951
NSN 5935-00-247-4642
NSN 5996-00-810-8289
NSN 6145-01-430-2784
NSN 6650-00-443-4292
NSN 6650-00-269-5000
NSN 6105-01-421-6925
NSN 6110-01-460-3566
NSN 5935-01-138-2707