It is a blue print or a copy on paper for the specifications of an item to be produced or manufactured
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If the working drawings are what is used to manufacture the object then there should be no difference. There will be more detail given in the working drawing but they would be engineering tolerances.
answer:-to draw vetical and inclined lines
In a drawing, a centre line is used to show the centre of a part.
Since every full pack has four aces, there would be eight aces in two packs. You would have a very good chance of drawing one or more aces.
By stating the general surface finish in a general note (often pre-printed in the format). Any different finishes in the body of the drawing are indicated by a 'tick' symbol with the relevant surface finish value in Micometres or Microinches above the horizontal line of the tick.