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P. D. gauge
OPTOMETRIC INSTRUMENTS
pupillometer
brass; steel
1999.4624
OPTOMETRIC INSTRUMENTS
pupillometer
brass; steel
P.D. gauge. Brass and blued steel frame. Adjustable nose, nasal projection and P.D. Various engraved scales. Two brass adjusting wheels. Pupil gauges slide along brow bar. Thin bowed straight sides with oval loops at ends.
1999.4624