Manufacturing And Production Technology
A jig is defined as a device which

Is used to check the accuracy of workpiece
Holds and locates a workpiece during an inspection or for a manufacturing operation
All of these
Holds and locates a workpiece and guides and controls one or more cutting tools

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Manufacturing And Production Technology
The grooving is an operation of

Embossing a diamond shaped pattern on the surface of a workpiece
Beveling the extreme end of a workpiece
Enlarging the end of a hole cylindrically
Reducing the diameter of a workpiece over a very narrow surface

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