Workshop Technology
Scribing block is used to

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

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Workshop Technology
The diaphragm moulding machine is used to

Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform packing of sand in the mould
Give uniform sand hardness throughout the mould
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

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