A Quality Unit For Your Experiments, Coiled Around A Divided Wooden Spool Are 4 Lengths Of Copper Wire (22 Gauge, 10M Long 22 Gauge, 20M Long 28 Gauge, 10M Long And 28 Gauge, 20M Long) And 1 Length Of Coppernickel Wire (22 Gauge, 10M Long) The Spool Is Mounted On A Lightweight Base With 6 Binding Posts Labels Indicate Each Wires Type, Length And Gauge To Measure Resistance, Connect The Mounted Coils To Your Wheatstone Bridge, Digital Ohmmeter Or Multimeter That Measures Ohms Computations Are Simplified Thanks To The Coils 21 Length Ratios
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