Moisture is measured for a variety of reasons, so a variety of tools are often needed. Because to much or to little moisture can be destructive, it is or particular interest to auditors, HVAC technicians, and roofers. Moisture meters can be invasive (pin type) or non-invasive (pin less) and used for anything form verifying the moisture of concrete, to dry-wall, to wood, to roofing materials. Several if these units can even several inches into a wall cavity to measure moisture levels in insulation through drywall. Need more help with you selection? Contact us for assistance.