拍品专文
John Dennett Potter worked between 1851-1880 from 31 Poultry, London
细节
A mid-19th Century parallel rule by J.D. Potter
the ebony rules with brass hinges, ivory note plaque and course-setting compass, signed POTTER POULTRY LONDON REGISTERED NOVR 1851 ; together with an early 19th Century hand held compass and a protrator, the rule -- 15in. (38cm.) long (3)
the ebony rules with brass hinges, ivory note plaque and course-setting compass, signed POTTER POULTRY LONDON REGISTERED NOV