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The BT40 and BT50 test bars are designed for regular accuracy testing of machining centers.
Use the BT40 or BT50 test bar for your machining center.
Size and accuracy specifications are shown below.
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| Test bars（BT50,BT40,HSK）Standard drawing |
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| Test bars（BT50,BT40） |
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| Test bars（HSK） |
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| Complete with wooden box |
 
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