Trial frame
 Catalogue Number: 4208 Trial frame Category: Equipment Sub-Category: Trial Frame Year Of Publication/Manufacture: c1895 Time Period: 19th C Description Of Item: Complex trial frame in silver metal, 140 x 50 mm, double lens clip in front of both eyes rotated by screw controls, single lens clip at back. Axis scales for each eye covering 185 degrees. Nose rest adjustable for both height and vertex distance by screw mechanisms, with a height scale. Adjustable eye separation with inch scale for interpupillary distance. Bridge bar printed with 'TEMPLE' and 'PUPIL'. Slide extending sides with curl ends. Back of left eyerim is stamped PAT NOV 6 94. Both temples stamped on inside PAT. APR. 30.95. Historical Significance: This trial frame from the late 19th century is noteworthy for using inch scale for PD instead of the usual mm. How Acquired: Donated by Ian Douglas Date Acquired: May 2022 Condition: Fair, missing one screw and print faded Location: Archive Office. Spectacles cabinet Drawer 5 |