Catalogue Number: 3553
Sola Graduate PD (Pupillary Distance) and Varifocal Lens Fitting Rule
Sub-Category: PD ruler, pupillometer
Corporation: SOLA Optical
Year Of Publication/Manufacture: c 1995
Time Period: 1940 to 1999
Place Of Publication/Manufacture: Adelaide
Publisher/Manufacturer: SOLA Optical
Description Of Item: Clear flat flexible plastic rule 187 mm x 28 mm with one rounded end and the other tapered at 35 degrees with a 5 mm notch. The lower edge has a 110 degree cut-out 8 mm deep midway along it. Various graduations printed in millimetres allow measurement of pupillary distance, monocular pupillary distance and pupil in a spectacle frame. The words Sola Graduate in black and a Sola logo in green appear on a white section of the rule.
Historical Significance: A dispensing rule designed to enable accurate fitting of varifocal lenses to a patient's frame. Sola Graduate lenses were launched in 1984, production ceased c 1998. PD rules of the same basic construction are found in Cat. Nos. 3468 and 3569.
How Acquired: Donated by Robert Kaye
Date Acquired: 4-3-2014
Condition: Good, slight yellowing
Location: Archive office. East wall shelves unit 3. Drawer 10