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The Datum Line System of Measurement
Association of Wholesale and Manufacturing Opticians
Europe: United Kingdom, England, London EC4
overall: 255 x 203 mm

Circular letter announcing the AWMO's decision to recommend henceforth the exclusive use of the Datum Line System of spectacle frame measurement. Typewritten in blue on both sides of a single sheet of corporate paper, signed by the General Secretary, B.G Arthur. Together with a letter, dated 13 June 1940, addressed to the Northampton Polytechnic Applied Optics Department enclosing a copy of this circular letter and the said copy.


Paul Fairbanks Archive

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