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Mechanical Engineering

Geoffrey Beresford Hartwell

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  1. Why should it be preferred. When I learned and used third-angle projection in the twentieth century it was the preferred projection and seemed easier to visualise.
  2. See https://staqoo.ie/blog/types-of-screws-and-bolts/https://staqoo.ie/blog/types-of-screws-and-bolts/
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