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花岗石（大理石）平尺的行业标准及用途：根据机械行业标准： JB/T7878-1999 制造。用于直线度和平面度测量。
花岗石（大理石）平尺的规格型号：
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规格（ mm ） |
工作面直线或平面度 |
工作面间平行度 |
侧面对工作面垂直度 |
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精度等级 um |
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00 |
0 |
00 |
0 |
00 |
0 |
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500 × 100 × 40 |
1.6 |
2.6 |
2.4 |
3.9 |
8.0 |
13.0 |
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750 × 100 × 40 |
2.1 |
3.5 |
3.2 |
5.3 |
11.0 |
16.0 |
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1000 × 120 × 40 |
3.0 |
5.0 |
4.5 |
7.5 |
15.0 |
25.0 |
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1000 × 120 × 60 |
3.2 |
5.3 |
4.9 |
7.9 |
15.6 |
25.8 |
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1200 × 120 × 40 |
3.69 |
6.2 |
5.4 |
8.5 |
16.4 |
26.5 |
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1200 × 120 × 60 |
3.69 |
6.2 |
5.4 |
8.5 |
16.4 |
26.5 |
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1500 × 150 × 60 |
4.2 |
7.2 |
6.5 |
11.0 |
21.5 |
36.2 |
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1500 × 150 × 80 |
4.2 |
7.2 |
6.5 |
11.0 |
21.5 |
36.2 |
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1600 × 150 × 60 |
4.4 |
7.4 |
6.6 |
11.1 |
22.0 |
37.0 |
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1600 × 150 × 80 |
4.4 |
7.4 |
6.6 |
11.1 |
22.0 |
37.0 |
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2000 × 200 × 80 |
5.4 |
10.0 |
8.1 |
13.5 |
27.0 |
45.0 |
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2500 × 200 × 80 |
6.0 |
14.3 |
10.2 |
13.8 |
35.0 |
69.6 |
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3000 × 300 × 100 |
8.0 |
16.0 |
12.0 |
14.0 |
42.0 |
81.2 |
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