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London Segment Height Determinator
MANUFACTURING AND DISPENSING EQUIPMENT
bifocal segment measure
London Optical Company Ltd
Europe: United Kingdom
mid 20th c.
plastic; wire
measure: 42 x 31 x 2 mm; box: 19 x 77 x 55 mm; leaflet: 70 x 49 mm
2003.207
MANUFACTURING AND DISPENSING EQUIPMENT
bifocal segment measure
London Optical Company Ltd
Europe: United Kingdom
mid 20th c.
plastic; wire
measure: 42 x 31 x 2 mm; box: 19 x 77 x 55 mm; leaflet: 70 x 49 mm
Pair of two perspex scales measuring 25mm in depth, marked with graduated millimetre scale and with sprung wire mounting edge. In red plastic box with hinged white lid. Also an instruction leaflet.
2003.207
Gift of the Essex County Hospital, 2003