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MANUFACTURING AND DISPENSING EQUIPMENT
overall: 100 x 270 mm
Multifocal lens rule, verification and marking device, printed in black and light blue on white flexible plastic. Featuring on obverse: p.d. and bridge scales plus two schematic diagrams of a decentred 'Varilux' progressive lens. On reverse: three schematic diagrams of a centred 'Varilux' progressive lens.
Gift of Mr Brian Mitchell, 2004