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Von Graefe reading optometer
OPTOMETRIC INSTRUMENTS
optometer
c.1870
metal
overall: 78 x 270 x 35 mm

Simple optometer. White metal square-sectioned rod with screw-in end. Marked scales 4 to 100 and -100 to -7. Metal handle, eyepiece and round fixation target with fixing screw.


1999.3366

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