KLEIN TOOLSPinless Moisture Meter for Non-Destructive Moisture Detection in Drywall, Wood, and Masonry; Detects up to 3/4-Inch Below Surface, Klein Tools ET140

Seems to be a great moisture meter. I believe it's accurate and the readings are consistent. Before and after planing shows a difference of .4% which proves this meter was worth the money. It also works great for other materials. Would recommend.

Used this to check how wet walls were after a flood or escape of water as insurance call them. This helped gauge how dry our building was for repairs to start

As described, not sure of the accuracy???

Used to measure damp levels in my caravan. East to operate. Compared to a pinned damp meter and the readings are similar.

Received broken. Powers on for a second and then powers off. I've tried different batteries and still doesn't stay on. Defective and returning to Amazon.

So I tested this tool on the exterior wall of our 1960's brick build semi-detached house. I can see the tar DPM on the brick line near to the ground. As expected on masonary setting the bricks below the DPM are Over Limit so they are full of moisture. I knew this would be the case, there are salt deposits on the brick level immediately below the DPM so this shows that evaporation is happening and the mineral salt is left behind. Above the DPM the value drops down significantly from 50% down to roughly 20% and then the lowest its gets it about 12-15% about a meter up the wall. This is an expected result. However when I move inside the house, the kitchen walls, apparently OL readings all over the wall from the floor to the ceiling. I can only assume this must be something to do with the painted finish? I also check the hallway internal brick wall and the same Over Limit reading. We do not have an issue with blistering or mould in this house, so I can only assume that the tool is giving a false reading, but why this is I am unsure, I can only put it down to the paint finish.

The media could not be loaded. Absolutely rubbish, cheap junk that won’t stay powered on. What a waster of time and effort!

Got this to measure moisture in the concrete floors in our new build about 12 weeks after they went down. We had the setting to masony but the readings were off the chart. We knew it couldn't be right as we had underfloor heating on during that time and the weather had been especially sunny. Got the builder and our floor installer to check using their moisture readers and the result came back fine - so we knew ours was wrong. Haven't used it since, maybe we got a dud but this was not accurate at all!!!