| DATE |
EVENT |
PEOPLE |
PICTURE |
| 1614 |
Invention of logarithms |
John NAPIER (or NEPER) (1550-1617) |
 |
| 1620 |
Invention of logarithmic scale |
Edmund GUNTER (1581-1626) |
 |
| 1625 env |
First slide rule |
William OUGHTRED (1574-1660) |
 |
| 1790 env |
Engineer's rule (or soho rule) |
James WATT (1736-1819) |
 |
| 1815 |
The soho rule arrives in France |
Edme JOMARD (1777-1862) |
 |
| 1820-27 |
First slide rule serially produced in France |
LENOIR father and son (1744-1832 and 1776-1827) |
 |
| 1851 |
Mannheim model slide rule |
Amédée MANNHEIM (1831-1906) |
 |
| ... |
Diffusion |
(1620-1975) |
 |
REGLACALCUL.COM