$25 worth a try. I've been in the automotive industry for several years and paid $600 for my colorimeter. What can you lose at $25? Well, $25 I think. Initially, the battery icon shows an empty battery with both new batteries. Then it turns off about every 30 seconds, even if it's in use. Every time it turns off you have to turn it back on and then change units if you want Mila. Then the statement cannot be trusted. The same panel measured 4 mil, then 6 mil, then back to 4 mil. If you can't trust the reading, what's the point? I'll come back and try this for $60.
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