In a screw gauge zero of the head scale lies above the pitch scale axis, the zero error is:

zero

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positive

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negative

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depends on the thickness to be measured

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Solution

The correct option is C
negative

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.

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In a screw gauge zero of the head scale lies above the pitch scale axis, the zero error is:

The correct option is C negative 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 correct option is C
negative

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.