Electronic Specialties 181 LOADpro Dynamic Test Lead and Fundamental Electrical Troubleshooting Book Finds the problems like high corrosive resistance, shorts to ground, open circuits quickly By loading the circuit, LOADpro makes a voltage drop test "on the fly", just press the switch and the test results can not lie Kit includes 200 pages of hand written, hand drawn electrical troubleshooting tips and procedures LOADpro test leads work with almost any digital multimeter Also features steadypin probe tips, instead of a pointed probe