I've been scoping out a decent, but reasonably priced multimeter (so that excludes Fluke, as much as I like them). My interest was piqued by the Ames line of meters at Harbor Freight, which appear to be good quality. My searches led me to the fact that this is a re-branded Mastech, even cheaper online! Anyway... What possesses people to answer "not sure" or "I don't know" to questions on the Amazon page. For example... Question: does it measure DC current drain on 12V automobile ?? Answer: I am not sure By David on May 16, 2018 0 votes Question: where can I download the user manual for this clamp meter?? Answer: Don't know mine came with a manual. By Garry mounce on December 5, 2017 Not sure By Anthony Hartz on December 5, 2017 You know, by virtue of the question going unanswered, we get that some people may not know.