Which of the following is true for the given statements about sine bars? Statement 1: Grade A sine bars are less accurate than grade B. Statement 2: Grade B sine bars are accurate up to 0.01 mm/m of length.

Correct Answer: F, F
Sine bars are graded as of A or B grade depending upon the accuracy of the centre distance. B grade of sine bars are accurate up to 0.02 mm per m of length but B grade is less accurate than A grade. A grade sine bars are accurate up to 0.01 mm per m of length.