The Cast Iron Coordinate Lineation Surface Plates serves as the datum plane for precise measurement and all kinds ofinspection lineation tasks. Some coordinate lines on the working surface areconvenience for measurement at any time. The raw material of the plates is thehigh-strength cast iron GG20-GG30 (HT200-300). After two times annealingtreatment, the plates have the features of steady precision and abrasionresistance. The size range is from 100mm 100mm to3000mm 8000mm. Larger one can be made according to the drawing.
