Automotive testing equipment is used to measure and identify potential issues in automotive engines and systems. Automotive test and record instruments, such as a multimeter kit, measure voltage, frequency, capacitance, and other factors to help pinpoint electrical issues. Automotive testing instruments are used to diagnose a range of problems, including cylinder compression, clogged mufflers, and pressure and vacuum leaks. Battery testers determine how much power automotive batteries are storing while battery load testers measure output voltage to help ensure batteries are producing enough power.