In mass manufacturing, two holes in a plate type of component are ideally located with the help of

A straight edge is inspected on a coordinate measuring machine. The readings obtained at intervals of $$100mm$$ along the top edge are $$100.01, 100.05, $$ and $$100.04$$ $$mm$$ the straightness error, making the end points as reference, is ....... $$mm$$

The diameter of the best wire to measure the effective diameter of a metric screw threads of $$0.5$$ $$mm$$ pitch is ......... $$mm$$

The fit on a hole-shaft pair system is specified as $$H7$$-$$s6$$. The type of fit is