Description
covering metals
Single large transparent plate filled with iron-rod plotting compasses
and field magnet for direct observation as students trace how current produces rotation in a closed magnetic circuit
supplying a duplicate-value option for paired-bench experiments on capacitor energy storage
Opisometer Geology covering metalsOpisometer with a knurled wheel on a threaded spindle, rolling along curved lines on maps, charts, and drawings to convert winding distance into straight line length for geography coursework.
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