Rotary Table 3 Inch - 75mm Horizontal & Vertical Model. Base Dimensions: 4. 1/8" x 3. 1/4" 4 T-Slots: 5/16" - Vertical Height - 1-5/8 Inch. Table Scale is Calibrated in 5 degree increment. Can be used both in horizontal & vertical position. Gear Ratio - 36:1, which basically means that the 1 rotation of the handle shall rotate the table by 10 degrees. Free - T Slot Cleaner With Table. Boxed Packed.