Daily entries from the 17th century London diary
A circular slide rule, made by John Brown
http://ingenious.org.uk/See/Scienceandtechnolog...
Per L&M ...
John Brown(e) of the Minories, maker of mathematical instruments.
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Jesse Link to this
A circular slide rule, made by John Brown
http://ingenious.org.uk/See/Scienceandtechnolog...
Rex Gordon Link to this
Per L&M ...
John Brown(e) of the Minories, maker of mathematical instruments.