I'm looking to buy one to check battery drain when the car is off. A clamp-on meter would be much more convenient to avoid needing to remove a battery cable and having all the radio and other memory settings erased. What would you suggest? The 600 and 1000 amp meters used by electricians won't give an accurate reading down to the 30 to 60 miliamp range that would be a normal reading. Any thoughts on the Fluke 322: http://us.fluke.com/usen/products/Fluke+320.htm?catalog_name=FlukeUnitedStates&Category=CLMP(FlukeProducts) It has 40 amp setting that has resolution down to 10mA. I've found it as low as $89.