1. The pre setter is suitable for CNC lathe,milling machine and drilling machine. 2. The magnetic force is increased,the suction force is greater. 3. IP65 grade of water and dust proof ability. 4. The measuring parameter has a quick responding speed. 5. Large LCD display screen for clear result reading. Large operation area,easy to manipulate and bottom is magnetic. Item Type:Pre Setter Accuracy:0.001mm Battery:1 x Button Cell 3v CR2032(Not Included) Protection Grade:IP65 Measuring Range:0-2.5mm Reading:0.001mm Error:+-0.005mm Color:Silver Material:Plastic+Metal Package Contents: 1 * Z Setter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.