Specifications: from 100*100 to 3000*6000 (special requirement need according to customer's drawing)
Usage: specialize in every kind of inspection for benchmark plane of precision measuring. It suitable for inspection measuring benchmark of machine and mechanism, it also can inspect the precision of size of part and make lineation compactness.
Precision: set 0, 1, 2, 3 four grades.
Material; High strength cast iron HT200-300
Rigidity of work-face: HB170-240
Inspection of flat surface quality: the grade 0 and 1 flat can't less than 25 graduation in 25 square millimeters of each side, grade 2 flat can't less than 20 graduation and grade 3 can't less than 12 graduation.