Po-le Optik PD Rule

Catalogue Number: 3756
Po-le Optik PD Rule
Category: Equipment
Sub-Category: PD ruler, pupillometer
Corporation: Po-le Optik
Time Period: 1940 to 1999
Description Of Item: Thin flexible white plastic rule 162 mm x35 mmm with Po-le optik in black and a logo in red imprinted. On the front face the top edge is printed with a centimetre scale with millimetre divisions and has a notch at the zero mark. The bottom edge has two cut-outs, one is arched with the numbers 26 to18 in intervals of 2 and the word Bridge printed above it and a downwards pointing arrow on the right hand edge, the word Eye with 38 printed below it are midway between the arrow and a second vertical line. The arrow and vertical line are joined by a broken horizontal line. A scale in millimetres from 40 to 60 in 2 mm intervals runs from the vertical line to the second, triangular cut-out. Two rectangular apertures centred around the triangular cut-out have millimetre scales from 20 to 40 along the top edge of the left hand aperture and both edges of the right hand aperture. The Bridge and Eye scales are absent on the rear face with millimetre scales above and below both rectangular apertures.
How Acquired: Donated by Robert Kaye
Date Acquired: 4/3/2014
Condition: Good.
Location: Archive office. East wall shelves unit 3. Drawer 10

Search the archive:

Author or Inventor:
Catalogue #
Name of Donor