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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
2003.226
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
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 and red foam lining.
2003.226
Gift of Mr Tony Stevens, 2003