Workshop Technology
The instrument which has all the features of try-square, bevel protractor, rule and scriber, is

Inside micrometer
Outside micrometer
Combination set
Depth gauge micrometer

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Workshop Technology
Notching is the operation of

Bending a sheet of metal along a curved axis
Cutting a sheet of metal in a straight line along the length
Cutting a sheet of metal through part of its length and then bending the cut portion
Removal of metal to the desired shape from the edge of a plate

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