Product dimension (L*W*H CM): 16.6*13.2*7.8
Inner packs dimension (L*W*H CM): 17.9*13.5*9.5

It is used to verify Ohm’s law of part circuit; used as additional resistance to enlarge measurement range of ammeter; used to measure unknown resistance; used as known resistance inserted in the circuit to regulate current; used to measure electromotive force and internal resistance of power supply and is the essential instrument in electrical experiment.