21. You have to file an aluminum block to a smooth finish, which one of the following cut of file is most suitable?
22. CNC machine are not manually operated. They are controlled by means of?
23. Scriber is made of
24. Which one of the following thread forms is provided in the threaded parts where the pressure acts on one flank of the threads during transmission?
25. Which one of the following parts of a universal surface gauge helps to draw parallel lines along a datum edge?
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