domain : www.antiques-in-france.com
nom : Mr A Roberts
tel : +44 1514249523
email : adriandc_roberts@hotmail.com
message :I have what appears to be a French ballistic sliderule of sort and wish to sell it. It is made of brass with a white metal finish, I would hesitate at saying &#039;silvered&#039;.
each arm is 168mm x 16mm x 3mm  (fully open 336mm). It weighs 132gramms. I can send pictures of item.