Adjust the tension lever and move the microscope left-right-up-down to any position; microscope stays in place. The vertical travel distance is 265mm. Vertical post height is 380mm with an outside diameter of 37mm. Locking ring on vertical post for stopping.
Focus mount:  Centerline to centerline 6 inches from the fitting to head ring. Focusing controls with 54mm movement.
Weight with microscope is about 55 lbs.