• Granite Square Rulers

Granite Square Rulers

On inspection of verticality and parallelism as well As absolure 90° measuring
Granite Square Rulers

(mm)
Squareness between
abjacent measuring
surface
straightness of 
measuring surface
Parallelism between
opposite
measuring surface
Precision grade (m)
00
0
00
0
00
0
160 X 160
2
4
0.8
1.7
2
4
200 X 200
2
4
0.9
1.8
2
4
250 X 250
2.2
4.5
1
2
2.2
4.5
315 X 315
2.6
5.2
1.1
2.3
2.6
5.5
400 X 400
3
6
1.3
2.6
3
6
500 X 500
3.5
7
1.5
3
3.5
7
  • On inspection of verticality and parallelism as well As absolure 90° measuring

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