Question

how to find zero error in screw gauge?please explain​

Answer 1

$\huge\bold\red{U^ｪ^U }$

Zero Error of a Screw Gauge:

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 coincides with the pitch scale axis, there is no zero error.

Answer 2

Answer:

See your physics book,don't ask silly qstns