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Europe: United Kingdom
overall: 165 x 231 x 72 mm
Electrically-illuminated test types mounted within grey planished metal box. Two large paragraphs of text with four smaller paragraphs representing sizes N5-N10. With two small lateral and vertical fixation disparity (OXO) tests for near vision. Withdrawable spring-controlled tape measure with round blue release button. White flex and plug.
Gift of Arthur C. Mawson in memory of H.P. Southcott, 2001