Exact total weight = 85.95 Pounds. 10 turn (Rotations) of the coarse moves the stage 1/2. About 1.3mm one cycle turn.
20 turn (Rotations) of the fine moves the stage 1/16. About 0.08mm one cycle turn. This item is in very good condition and works well. PLEASE See pictures for more detail.
What you see are what you will get. Just tell us about the situation, we will respond immediately. In contiguous 48 United States! We reserve the right of asking for the proof of damage.