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Question
In some cases, the screw gauge is said to have a negative zero error. What is this negative zero error?
In some cases, the screw gauge is said to have a negative zero error. What is this negative zero error?
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Solution
When the plane surface of the screw and the opposite plane stud on the frame are brought into contact, if the zero of the head scale lies above the pitch scale axis, the zero error is negative. The zero error is negative in the following case:
When the plane surface of the screw and the opposite plane stud on the frame are brought into contact, if the zero of the head scale lies above the pitch scale axis, the zero error is negative. The zero error is negative in the following case:
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