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The July 1957 issue of Popular Mechanics contained a 3 page article by C. W. Woodson giving plans for fabricating
index centers for a mill or shaper. It is believed that these plans are now in the public domain due to
copyright expiration. In any event, the scanned images (in .jpg format) from that issue are provided
here for educational and private use purposes.
The images are provided in two resolutions - 150x150 and 300x300. The former are smaller in size (faster download)
but not quite as crisp. These are scan of prints from microfilm so the quality suffers a bit. They are legible enough
to convey the general idea and some of the details.
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