Excerpt from Popular Science Monthly, Vol. 107: The Magazine of Invention and Discovery; September, 1925In addition to the above tests, the screwdrivers are inspected for finish and workmanship, the handles for security, and ratchets and locks are carefully tested to see that they function easily after the screwdrivers have been subjected to further severe torque and
| Title | : | Popular Science Monthly, Vol. 107: The Magazine of Invention and Discovery; September, 1925 (Classic Reprint) |
| Author | : | Bonnier Corporation |
| Language | : | en |
| Rating | : | |
| Type | : | PDF, ePub, Kindle |
| Uploaded | : | Apr 07, 2021 |
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