Collection of four ophthalmic rulers owned by Ella Pink

Description Of Item: Collection of four dispensing rulers (1) interpupillary distance rule, varnished wood with black engraving, 139 x 50 mm, for measuring the distance between the centres of the pupils of the two eyes and also for measuring various dimensions of spectacle frames, (2) rule for measuring the length of curl sides of spectacles, varnished wood, 150 mm long x 45 mm overall width, marked 'THE INTERNATIONAL CURL SIDE RULE, (3) varnished wood 175 x 47 mm, with cut-outs for measuring nose width and engraved with scales to measure a variety of dimensions of the eye and spectacles, marked 'E.0.09 / LONDON' and 'REGD NO. 629288', and 4) white ivorine rule, 225 x 38 mm, with cut-outs for measuring nose width.