Workshop Technology
Scribing block is used to

Check the surface roughness
Hold the round bars during marking
Check the trueness of flat surfaces
Locate the centres of round bars

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Workshop Technology
Lancing is the operation of

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

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