Publisher's Synopsis
Excerpt from The Sparrett Book for Machinists Apprentices
But laying out requires some knowledge of mathe maties, some skill at mechanical drawing, and an acq'uaint ance with machinists' fine tools and shop operations. Attention to details and extreme care are of utmost im portance. Increased labor cost, as well as material wasted because of errors in laying out, are the penalties of mistakes.
The apprentice, then, should lose no opportunity to make himself capable of laying out work. Close observa tion of pieces laid out by skilled machinists is one way of becoming/ acquainted with the art. The fortunate apprentice may also have Opportunity to observe a skilled machinist while laying out various jobs.
The number of measuring and laying out tools or instruments now purchasable is very great and the ap prentice must become familiar with practically all of them. He must know what he can accomplish with each so that he will instinctively select those best suited to the job in hand.
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