RRRRare Circular Slide Rule Calculimetre Charpentier Type 2 With Leather Pouch
Item History & Price
Reference Number: Avaluer:4321160 | Modified Item: No |
Country/Region of Manufacture: France |
Calculimètre Charpentier type 1 (on the left, not to sell) is rare,
but Calculimètre Charpentier, to sell here, type 2 is very very very rare.
(I saw only 4 on ebay and 1 at an O.S. meeting
the second image among the circular rules. See below).