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

Depth gauge micrometer
Inside micrometer
Outside micrometer
Combination set

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Workshop Technology
In permanent mould casting method

None of these
Molten metal is forced into mould under high pressure
Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition
Molten metal is poured and allowed to solidify while the mould is revolving

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