Question

QUESTION THREE (i) With the aid of a sketch, explain how a sine bar may be used to set or measure an angle on a work piece. (5 marks)

Answer 1

a sine bar is placed on a level surface the top edge will be parallel to that surface.

Step-by-step explanation:

If one roller is raised by a known distance, usually using gauge blocks, then the top edge of the bar will be tilted by the same amount forming an angle that may be calculated by the application of the sine rule.