Two ivory slide rules for use in wine and spirit trade for customs duty and other calculations, in good condition with original leather cases. Top item by T. O. Blake. Bottom by H. Carr Gibbs
Thes items can only be sold within the European Union
Ask the Dealer
Fletcher Wallis sells objects and books relating to the history of science, medicine and technology from his unit at Admiral Vernon Arcade Portobello Road. He publishes books through Vernier Press, including Antique Medicine Chests, and Corkscrew Patents from 1795. He has been dealing for thirty five years.