To what accuracy all face of a precision polygon made square to the bottom supporting surface?
(a) 2.5 µm
(b) 3.5 mm
(c) 2.5 mm
(d) 3.5 µm
I had been asked this question in a job interview.
This intriguing question originated from Precision Polygons topic in chapter Angular Measurement and Circular Division of Engineering Metrology