Inquiry (采购产品): 30 A 12 volt DC Ammeter Am looking for a DC Ammeter for use under the hood of a car to measure amp draw of a hydrolysis unit connected to a 12 volt car battery. Up to 30 amps should be enough. For testing only, not for permanent mounting. **** Hidden Message ***** David Gregory 04917 Company: The Gregory Company E-mail: dgregory2@roadrunner.com **** Hidden Message ***** dgregory2@roadrunner.com