12 What is meant by roughness O O Minute succession of hills

Last updated: 6/21/2023

12 What is meant by roughness O O Minute succession of hills of different height Minute succession of valleys and hills of different height and varied spacing Minute succession of valleys and hills of same height and same gap Minute succession of valleys of different depth 13 Which of the following is used to test leveling of machine bed O Feeler gauge O Slip gauge O Sensitive spirit level O Mandrels