Description
Used to draw electrons from glass and ebonite rods during rubbing
sized for beginner circuit and physics labs
covering metals
and field magnet for direct observation as students trace how current produces rotation in a closed magnetic circuit
Opisometer Geology Used to draw electrons fromOpisometer 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.
Exchange/Return Notes
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- Final sale items are not eligible for returns or exchanges.
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