A few of our readers knew about our mystery tool from the Antique Toolbox column Sept. 27 — some, from personal experience. The tool is part of the collection of the Landis Valley Village & Farm ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback