Velocity analysis of a mechanical punching press mechanism using the instant centers method. Part 2 

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@@mohabatkhanmalak1161 You are right … 1cm = 10mm is by International conversion but in this example, the question stated that the actual length of the link is 100mm which is scaled to 1 cm on the paper which means the scale for this particular question is 1cm=100 mm.. I hope this helps … Don’t forget to like and subscribe to this channel..Thank you