工(gong)字(zi)平尺按/T7977-99標準制造，材料為HT250,工(gong)(gong)作表面(mian)采用(yong)刮研(yan)或jingmi磨削工(gong)(gong)藝。工(gong)(gong)字(zi)(zi)(zi)平(ping)(ping)尺(chi)(chi)用(yong)于機床檢(jian)(jian)驗(yan)中檢(jian)(jian)驗(yan)不平(ping)(ping)度(du)和(he)不直(zhi)度(du)兩個工(gong)(gong)作面(mian)是配合塊規，千分尺(chi)(chi)，水(shui)平(ping)(ping)儀等(deng)儀器檢(jian)(jian)驗(yan)，不同(tong)高度(du)，兩導(dao)軌(gui)的平(ping)(ping)行和(he)不連接導(dao)軌(gui)的水(shui)平(ping)(ping)，工(gong)(gong)字(zi)(zi)(zi)平(ping)(ping)尺(chi)(chi)并可以配合直(zhi)角尺(chi)(chi)，檢(jian)(jian)驗(yan)只用(yong)直(zhi)角尺(chi)(chi)無(wu)法檢(jian)(jian)驗(yan)的兩機件的垂直(zhi)度(du)的量具，工(gong)(gong)字(zi)(zi)(zi)平(ping)(ping)尺(chi)(chi)還適用(yong)于設(she)備安(an)裝和(he)檢(jian)(jian)查，使用(yong)溫度(du)（20±5）℃。
工(gong)字平尺的(de)規格有很多種,常見(jian)的有：（mm）
500×35 、750×40 、1000×50 、1200×50、 1500×70 、2000×80 、2500×80 、3000×100 、3500×100 、4000×10
工字平尺的規格表：
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規格(ge)mm
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工作面(mian)直(zhi)線度或平面(mian)度
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工作面間(jian)平行度(du)
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側面(mian)對工作(zuo)面(mian)垂(chui)直(zhi)度
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||||||
|
度等級um
|
|||||||||
|
0
|
1
|
2
|
0
|
1
|
2
|
0
|
1
|
2
|
|
|
500×35
|
3
|
6
|
12
|
4.5
|
9
|
18
|
15
|
30
|
60
|
|
750×40
|
4
|
8
|
15
|
6
|
12
|
25
|
20
|
40
|
80
|
|
1000×50
|
5
|
10
|
20
|
7.5
|
15
|
30
|
25
|
50
|
100
|
|
1500×70
|
7.4
|
15
|
30
|
10
|
20
|
40
|
37
|
75
|
150
|
|
2000×90
|
9
|
18
|
36
|
13.5
|
27
|
54
|
45
|
90
|
180
|
|
2500×90
|
11
|
22
|
44
|
16
|
32
|
65
|
55
|
110
|
220
|
|
3000×100
|
13
|
26
|
52
|
19.5
|
39
|
78
|
65
|
130
|
260
|
|
3500×100
|
15
|
30
|
60
|
22
|
45
|
90
|
75
|
150
|
300
|
|
4000×100
|
17
|
34
|
68
|
25
|
50
|
100
|
85
|
170
|
340
|
|
5000×110
|
21
|
42
|
84
|
30
|
60
|
120
|
105
|
210
|
420
|
中字幕視(shi)頻在線永久在線:
中字幕視頻在線(xian)永(yong)久在線(xian):
