Fai Login o Registrati per scaricare i media e creare liste
Copertina
Suggerisci modifica o segnala un errore

Matrix monocular optical depth testing instrument

;

Science Museum Group,

DESCRIZIONE

Matrix monocular optical depth testing instrument, Plant No.2351, made by The Monotype Corporation Ltd., Salford, Redhill, Surrey, 1957. The instrument is fitted with a ‘John Bull’ dial micrometre by British Indicators Ltd. Used in the production of Monotype matrices to measure the depth of letter characters.

DETTAGLI