Extech EX420 400 Series Autoranging Digital Multimeter is worthwhile with its 11 functions, such as the ability to take advanced readings like capacitance, frequency, and duty cycle. There is also a relative function for figuring out a base-line and has an internal Type-K thermometer.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
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Replaced by EX310