Granite Right Angle Square

ND is at the foot of “Jinanqing” granite mine which boasts rich mineral resources and advantaged resource condition. It has complete machinery processing equipment, is equipped with advanced electronic detection instrument, realizes computer data processing and has a group of high-quality dedicated staff.

TYPE(mm)	Squareness beteween neasuring surface datum surfac		Flatness& straightness of measuring surface		flatness& straightness of datum surface
	Precision grade
	00	0	00	0	00	0
100x63	1.5	3	1	1	1	1
160x100	2	4	1	2	1	1
250x160	2	4	1	2	1	2
400x250	3	6	1.5	3	1	2
630x400	4	8	2	4	1.5	3
1000x630	6	12	2.5	5	2	4

For inspecting machine spindle and else squareness work-pieces.

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