Front without slide

Back of the slide



Length 26 cm
Number of scales 10
Country of origin Netherlands
Country of manufacturing France
Year of manufacturing First half of 20th century; later than 1889. If I compare it to my Faber-Castells I would guess 1900-192.
Status of the slide rule Slightly damaged
Material of the slide rule Celluloid on wood
Type of cursor Metal with glass
Status of the box None
Type of box None
Status of the manual None
Collection number 235
Further comments I have not been able to find a similar one on the Internet. Not even in Herman's archive (http://sliderules.lovett.com/herman/begin.html).

It was apparantly sold in London by J.H. Steward, as can be seen on the back.



 Last updated: 04-09-2009