Trial frame for taking facial measurements
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Catalogue Number: 4492
Trial frame for taking facial measurements
Category: Equipment
Sub-Category: PD ruler, pupillometer
Designer/inventor: J Harwood
Year Of Publication/Manufacture: 1923
Time Period: 1900 to 1939
Place Of Publication/Manufacture: United Kingdom
Description Of Item: Instrument to make facial measurements for fitting spectacles, made of metal, glass and white celluloid plastic. Calibrated to measure monocular PD's, frame tilt, bridge position and bifocal height, and marked 'PAT. No 208028'. The British Patent GB208028A, lodged January 4, 1923, is titled 'An improved instrument for taking the facial measurements required for fitting the frames of spectacles and eyeglasses.' Size: W: 1893mm x H: 85mm x D: 57mm.
Historical Significance: Believed to have been in the Kett collection before 1988, but not recorded.
How Acquired: Not known
Date Acquired: Prior to 1989
Condition: Very good
Location: Archive Office. Cabinet One Drawer 16
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