公法线千分尺用于测量齿轮公法线长度，是一种通用的齿轮测量工具。符合GB标准。
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编 号
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测量范围
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读数值
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质 量(kg)
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a
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b
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c
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|
712-01
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0-25mm
|
0.01mm
|
0.274
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37.5mm
|
25.0mm
|
φ20
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-2
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25-50mm
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0.356
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62.5mm
|
35.0mm
|
φ25
|
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-3
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50-75mm
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0.454
|
87.5mm
|
47.5mm
|
φ25
|
|
-4
|
75-100mm
|
0.6
|
112.5mm
|
60.0mm
|
φ25
|
|
-5
|
100-125mm
|
0.772
|
137.5mm
|
72.5mm
|
φ25
|
|
-6
|
125-150mm
|
0.961
|
162.5mm
|
85.0mm
|
φ25
|
|
-7
|
150-175mm
|
1.35
|
196mm
|
107mm
|
|
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-8
|
175-200mm
|
1.62
|
221mm
|
119mm
|
|
|
-9
|
200-225mm
|
1.84
|
246mm
|
132mm
|
|
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-10
|
225-250mm
|
2.03
|
271mm
|
144mm
|
|
|
-11
|
250-275mm
|
2.3
|
296mm
|
157mm
|
|
|
-12
|
275-300mm
|
2.68
|
321mm
|
169mm
|
|