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Freeman bi-chromatic test
OPTOMETRIC INSTRUMENTS
bi-chromatic test
Harry Freeman
Europe: United Kingdom, England, London
Mid-late 20th c.
plastic
overall: 157 x 91 x 45 mm

One of three prototype OMIS and bi-chromatic tests devised at home by Harry Freeman. White plastic light box with red/green test film applied to bulb screen. Also features a Freeman OMIS Near Unit test and illuminated near vision test types N5-N10.


2001.311

Gift of Mr Philip Freeman, FCOptom, 2001


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