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MANUFACTURING AND DISPENSING EQUIPMENT
Europe: United Kingdom; Europe: Austria
diameter: 280 mm
In-practice selection chart for auxiliary clip-on tinted lenses to accompany Silhouette spectacle frames, consisting of two printed rotating card discs with four apertures to read off the appropriate model number. Handling tab with short metal chain for carrying or display suspension.
Gift of Mr Andrew Gasson, FCOptom, 2009