Dry Field Mapping Kit for Electric Field Visualization Base Size_2.3" Wide-range triple-scale moving-coil DC voltmeter

Wide-range triple-scale moving-coil DC voltmeter at 0-3V

and tectonics reshape terrain over geological time

Portable compact magnetic stirrer with a 4-inch round plate

this simple tangent galvanometer turns Oersted's effect into a quantitative ammeter calibrated against Earth's field

Seamless translucent silicon tubing in a 40-inch length with 11 mm outer and 7 mm bore

Dry Field Mapping Kit for Electric Field Visualization Base Size_2.3" Wide-range triple-scale moving-coil DC voltmeterDesigned to let students draw their own electrodes on conductive graph paper and trace equipotential lines with a multimeter, this kit makes electric field patterns visible without high voltage.