Collection

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BRASS CYLINDER CONDUCTOR

ELLIOTT BROTHERS WATER CURRENT METER

ARAGO DISK

DOUBLE SCOPE ECCENTRIC THEODOLITE

ELECTRIC FLY aka "ELECTRIC WHIRL" with Bells

BABINET GONIOMETER

FRIEDRICH LUX GAS BALANCE

ACHROMATIC DUPLEX PRISM

LARGE GEISSLER TUBE ROTATOR

SEISMIC INSTRUMENT EARTHQUAKE DETECTOR

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