Four Circular Slide Rule Calculators
Various
Circa
1900
Country of manufacture
UK and Ireland
Description
Single sided Lord’s calculator by Elliot Bros. london-£300
Calculigraphe Double-sided [scratched name Chevassut on dial]-£170 SOLD
Boucher double-sided by Stanley [loop missing from turn-£240
Single-sided calculator unsigned [Mechanical Engineer type-£150
All above in working condition
Ask the Dealer
Dealer information
Fletcher
Fletcher Wallis
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.
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