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Made from natural wood
Reticle Adjustable Eyepiece
Sirrer for the inner vessel
sound conduction of various substances
Demonstration Meter with Changeable Interscapes Experiment kit Made from natural woodA versatile instrument and demonstration meter that can be converted to an A. C., or D. C. voltmeter or ammeter with selection of various ranges for each mode. With a high quality moving coil, spring controlled movement with full scale deflection of 5 mA or 100 mV D. C. The long pointer has a spade end and is clearly visible from a distance. Fitted in case with glass front and back. The instrument can be used with different dials to give different
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