Craftsman Digital AC/DC Clamp-On Ammeter
Digital clamp-on ammeter. Measures AC/DC current up to 400 amps with 3.0 percent (VAC) accuracy without breaking the circuit. Also measures AC/DC voltage, resistance, frequency, capacitance, continuity and diode. Type K thermometer allows for surface or air temperature measurements. Display is an extra large 4000 count LCD screen. Also includes one-touch auto zero, belt holster, molded rubber holster, auto on/off, test leads and thermocouple. Category III - 600 volt.
I bought one of these from Sears in the U.S. on my last trip. $59.99 seems pretty good to me. Sears sells better meters (like Fluke) as well but they cost too much for my hobby usage.
I plan to measure the DC current output of my solar panels and measure the current drawn when running my coffee maker off my inverter etc.
It would be a handy tool to determine how high the parasitic draw from your battery is.