If the zero of the head scale lies below the pitch scale axis, the zero error is ___.

absent

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negative

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positive

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combined

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Solution

The correct option is C positive
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 below the pitch scale axis, the zero error is positive.

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If the zero of the head scale lies below the pitch scale axis, the zero error is ___.

The correct option is C positiveWhen 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 below the pitch scale axis, the zero error is positive.

The correct option is C positive
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 below the pitch scale axis, the zero error is positive.