excellent condition Engineering microscope with clear optics, calibrated fine adjustment to attach to a milling machine or lathe bed with a T  slot  that measures 12.7mm x 45.50mm approx. 
The tommy bar running through the vertical mounting shaft is 8mm approx diameter , the main shaft measures25.15mm Diameter. . 
The microscope detaches at the platform via 4x allen key fixings 

weighs more than 3 Kg 

Thanks for looking