"1. Low Profile Precision Mini Rotary Table 3"" 75mm is manufactured from Seasoned casting. 2. High Precision Quality Made Low Profile Rotary Table Table Height : 42mm Table Height With Chuck : 95mm Worm Gear has 36:1 ratio The hand wheel is in 10 min division and can be set at 0 Degrees 3. Worm- Gear Ratio - 36:1, which basically means that the 1 rotation of the handle shall rotate the table by 10 degrees."