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Water Cycle Chart with roller
Reticle Adjustable Eyepiece
is mounted on an insulating support rod with a stable base
Literacy practice for phase 2 of the letters and sounds program
sound conduction of various substances
Demonstration Meter with Changeable Interscapes Experiment kit Water Cycle Chart with rollerA 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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