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simple optometer with variable eyepiece
OPTOMETRIC INSTRUMENTS
simple optometer
boxwood; glass; metal
overall: 103 x 385 x 85 mm
1999.3236
OPTOMETRIC INSTRUMENTS
simple optometer
boxwood; glass; metal
overall: 103 x 385 x 85 mm
Simple optometer. Boxwood rod with scale in inches 1 to 12. White metals stand and sliding fixation target holder with clips. Unusual triple aperture eyepiece with two eyecups (one loose) on revolving plate.
1999.3236