LENOIR   SOHO  1825 (model Jomard)

dimensions (mm) : 360 x 29 x 10

previous  next   list

on the back, a series of constants concerning old measures (329 places!)

up, scale in cm et mm ; down, scale in Paris inches (1 inch = 12 lignes = 2,707 cm)

Only a few examples of this rule are known
The CNAM museum has one, very luxurious (in ivory with a mahogany case) (ref. 09967)