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simple optometer
OPTOMETRIC INSTRUMENTS
optometer
Europe: United Kingdom
Post 1887
metal; wood; ebony
overall: 110 x 293 x 35 mm
1999.3365
OPTOMETRIC INSTRUMENTS
optometer
Europe: United Kingdom
Post 1887
metal; wood; ebony
overall: 110 x 293 x 35 mm
Optometer. White metal square-sectioned rod with milled edge screw-in endpiece. Marked scales 2 to 14 and 6 to 48. Metal stand/handle. Black ebony eyepiece and round white metal fixation target with paper insert.
1999.3365
BOA Purchase, 1932