A screw gauge with pitch 1 mm and 100 divisions on circular

Last updated: 6/11/2023

A screw gauge with pitch 1 mm and 100 divisions on circular scale is used to measure the thickness of a glass slab When there is no object between the studs and the faces of the screw gauge touch each other the 40th division of circular scale coincides with the reference line Now the glass place is held between the studs and reading of linear scale is found to be 5 and that of circular scale is 26 What is the thickness the glass plate It is given that zero of linear scale is not visible when the faces touch each other