Question

A straight edge is inspected on a coordinate measuring machine. The readings obtained at intervals of 100 mm along the top edge are 100.1, 100.5 and 100.4 mm. The straightness error, making the end points as reference is mm

• A. 0.25

Answer 1

The correct option is A 0.25
$(y-100.1)=\frac{0.3}{200}(x-100)$

$\text{At x = 200, y = 100.25 mm}$

$\text{Error = y - 100.5 = 0.25 mm}$