| Operation Steps：
1. Prepare the glass lid and test platform with adjusting screw and dial indicator. 2. Fix the glass lid on the platform with adjusting screw into the knob hole. 3. Fixed the dial indicator onto 2/3 position of the glass lid edge (No near to steam hole). 4. Rotate the platform slowly, check the dial indicator data value, it showing no more than 8% is qualified. |  |
