| The Bridge Flat Ruler is made according to JB/T7977-99 Standard, with HT250 material, the working face is shaved and ground processed, it is a kind of measuring tool used for detecting Linearity and Flatness of work pieces, using in temperature of (20¡À5)¡ãC¡£ |
|
851 Bridge Shape Flat Ruler |
Specification
mm |
Linearity or Flatness of Working Face |
Verticality of Side Faceace to Working Face |
Precision Grade um |
00 |
0 |
1 |
2 |
00 |
0 |
1 |
2 |
500x500 |
1.5 |
3 |
6 |
12 |
7 |
14 |
30 |
60 |
750x50 |
2 |
4 |
8 |
15 |
10 |
20 |
40 |
80 |
1000x50 |
2.5 |
5 |
10 |
20 |
12 |
24 |
50 |
100 |
1600x70 |
4 |
7.4 |
15 |
30 |
20 |
40 |
80 |
160 |
2000x80 |
5 |
9 |
18 |
36 |
25 |
50 |
100 |
200 |
2500x90 |
6 |
11 |
22 |
44 |
30 |
60 |
120 |
240 |
300x100 |
7 |
13 |
26 |
52 |
|
65 |
130 |
260 |
3500x100 |
|
15 |
30 |
60 |
|
75 |
150 |
300 |
4000x100 |
|
17 |
34 |
68 |
|
85 |
170 |
340 |
5000x110 |
|
21 |
42 |
84 |
|
100 |
200 |
400 |
6300x120 |
|
26 |
52 |
105 |
|
130 |
260 |
520 |
8000x120 |
|
33 |
66 |
132 |
|
165 |
330 |
660 |
|
|
852 Round Flat Board |
Specification
mm |
Precision Grade um |
00Grade |
0 Grade |
1 Grade |
2 Grade |
3 Grade |
300x80 |
3 |
5.5 |
11 |
22 |
60 |
500x100 |
3.5 |
6.5 |
13 |
26 |
70 |
800x150 |
4 |
8 |
16 |
32 |
80 |
1000x180 |
5 |
10 |
20 |
40 |
100 |
1200x200 |
5.5 |
11 |
22 |
44 |
110 |
1500x200 |
6 |
12 |
23 |
46 |
120 |
1800x220 |
6.5 |
13 |
266 |
52 |
130 |
2000x250 |
7 |
14 |
28 |
56 |
140 |
2500x300 |
8 |
16 |
32 |
64 |
160 |
3000x350 |
9 |
18 |
36 |
72 |
180 |
3500x400 |
10 |
20 |
40 |
80 |
200 |
4000x450 |
11 |
22 |
44 |
88 |
220 |
|
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