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 6145-00-779-6466
NSN 5999-00-226-6708
NSN 6145-01-488-6737
NSN 5855-00-361-0167
NSN 5985-01-466-1331
NSN 6685-00-455-9941
NSN 5920-01-136-4709
NSN 5905-01-112-0724
NSN 5945-01-537-3554
NSN 5990-01-154-7296
NSN 6685-01-634-0611
NSN 5855-01-180-5369