Synoptophore, by Curry & Paxton Ltd, London and transformer, English, 1940-1960 Synoptophore, by Curry & Paxton Ltd
Book of Jaeger test-types for assessing visual acuity, maker or arranger Curry and Paxton Ltd., 195/199 Great Portland Street and 22 Wigmore Street, W1, London, England, 1871-1930. Book of Jaeger test-types for assessing visual acuity