Problem 1 Explain why a measuring instrument may not have sufficient precision?

Answer 1

Problem 2 Why do you think the word accuracy and precision are so often?

Answer 2

Problem 3 Calculate the curvature of a part.

In the following figure, a part to be measured is placed on two identical precision rollers. The distance between two rollers is l mm, the height from the platform to the bottom of the part is h mm, and the radius of the rollers is r mm. Given l, h, r, calculate the radius of the part, R.

Answer 3