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Home >> Products >> Casting lron square leveling ruler
Manufactured according to the standard JB/T6092-85 with the material of HT200, mainly used for the inspection and scribing of the right-angle of various parts and also used for the perpendicularity measurement of relevant surfaces of parts during the installation and maintenance of equipment.
| Type（mm） |
Perpendicularity between
adjacen measuring
surface |
Flatness and straightness
of measuring surface |
Flatness and straightness
of datum surface |
| Precision grade (μm) |
| 0 |
1 |
2 |
0 |
1 |
2 |
0 |
1 |
2 |
| 150 × 100 |
4 |
8 |
16 |
1.5 |
2.5 |
5 |
2 |
4 |
8 |
| 300 × 200 |
6 |
11 |
22 |
2 |
4 |
7 |
3 |
6 |
11 |
| 400 × 300 |
7 |
12 |
25 |
2 |
4 |
8 |
3.5 |
7 |
12 |
| 500 × 350 |
8 |
15 |
30 |
2.5 |
5 |
10 |
4 |
8 |
15 |
| 630 × 400 |
9 |
18 |
35 |
3 |
6 |
12 |
4.5 |
9 |
18 |
| 800 × 500 |
10 |
20 |
40 |
3 |
7 |
14 |
5 |
10 |
20 |
| 1000 × 630 |
12 |
25 |
50 |
4 |
8 |
16 |
6 |
12 |
25 |
| 1250 × 800 |
15 |
30 |
60 |
5 |
10 |
20 |
8 |
15 |
30 |
| 1600 × 1000 |
18 |
38 |
70 |
6 |
12 |
24 |
10 |
18 |
35 |
| 2000 × 1250 |
22 |
46 |
80 |
8 |
15 |
30 |
12 |
22 |
40 |
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