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Prism Bar
OPTOMETRIC INSTRUMENTS
prism bar
Clement Clarke Ltd
Europe: United Kingdom, England
Mid-late 20th c.
metal; plastic; leather
overall: 292 mm x 34 mm
2011.693
OPTOMETRIC INSTRUMENTS
prism bar
Clement Clarke Ltd
Europe: United Kingdom, England
Mid-late 20th c.
metal; plastic; leather
overall: 292 mm x 34 mm
Prism bar comprising 16 wedge-shaped prisms (1-45) set within twin metal rails with hanging hole at end. Together with a soft black leather slip case.
2011.693
Gift of the Marton Library Trust, 2011