- surface plate
- 2016-11-10 23:51
- The " Square Machine "brand of granite measuring tools have thefollowing characteristics:1 High precision reliable stabi
- Vee- block
- 2016-11-01 09:53
- Tolerance of planeness: Standard JB/T7975-1999 Grade 000 = 1( 1+d/1000 ) m Grade 00 = 2( 1+d/1000 ) m Grade 0 = 4( 1+d/1