1.

Which of the following is not true regarding three jaw chuck?

A. if we rotate any one of three pinions, it may meshes with the teeth
B. the scroll disc, which has a spiral groove cut on the bottom face meshes with the teeth on the jaws
C. all these three jaws may be made to move simultaneously
D. none of the mentioned
Answer» C. all these three jaws may be made to move simultaneously


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