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1955 Calibration Scale for Schiotz Tonometers
ARCHIVAL ITEMS
selection chart
Gulden, R. O.; C. W. Dixey & Son Ltd
North America: USA, Pennsylvania, Elkins Park
1955
card; paper
overall (large chart): 281 mm x 165 mm; overall (small chart): 144 mm x 108 mm

Two calibration scales for tonometers, affixed to each other. American chart for 1955 printed on large laminated white card, as approved by the Committee on Standardization of Tonometers of the American Academy of Ophthalmology and Otolaryngology. Includes hanging hole. British chart for 1954 printed on a small slip of white paper.


2012.481

Gift of Glasgow Caledonian University, 2012



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