What are the characteristics permissible tolerance flatness of upper and lower surface of 100mm sine bar I.S. 5359—1969?
(a) 0.001mm
(b) 0.01mm
(c) 0.005mm
(d) 0.05mm
I had been asked this question by my school teacher while I was bunking the class.
My question is based upon Sine Principle and Sine Bars in section Angular Measurement and Circular Division of Engineering Metrology