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 6150-00-657-4759
NSN 6610-01-365-7796
NSN 5965-00-772-8024
NSN 6110-01-229-7063
NSN 5910-01-441-6827
NSN 6650-01-611-8539
NSN 5975-01-634-0678
NSN 6130-01-087-8258
NSN 5985-00-096-5510
NSN 5960-00-135-0750
NSN 5999-00-381-9605
NSN 5960-01-301-3315