Review on 📏 General Tools MMD4E: Highly Accurate Moisture Meter with High, Medium, Low Measurements by Chris Estes

Bought to test drywall at father-in-law's house. The roof of her chimney leaked, damaging the inner plasterboard wall. We called someone to diagnose/fix the leak, but before paying someone to fix the drywall, we wanted to see if the leak was actually fixed. Bought a few days before it started raining for the first time since the repair and of course moisture was again noticed in the damaged area. They returned to check their work. The guy said it was residual moisture from the first leak (2 months ago. Good for sure) but quickly backed down after I showed him photos of readings of 5% before rain and +20% an hour after the rain started. again.