
MESTEK’s WM700 / WM710 series are handheld moisture meters commonly sold as pinless (inductive) or hybrid (pinless + optional pin probe) models for building inspectors, flooring contractors, restorers and DIYers. They use electromagnetic (inductive/dielectric) sensing to detect subsurface moisture under finished surfaces (wood floors, drywall, plaster, concrete) without puncturing the surface, and many units include a color LCD, audible alarm and simple material presets (softwood / hardwood / wall / masonry). Typical effective sensing depth is in the ~20–40 mm range depending on the exact model and the material under test.
MESTEK’s WM700 / WM710 series are handheld moisture meters commonly sold as pinless (inductive) or hybrid (pinless + optional pin probe) models for building inspectors, flooring contractors, restorers and DIYers. They use electromagnetic (inductive/dielectric) sensing to detect subsurface moisture under finished surfaces (wood floors, drywall, plaster, concrete) without puncturing the surface, and many units include a color LCD, audible alarm and simple material presets (softwood / hardwood / wall / masonry). Typical effective sensing depth is in the ~20–40 mm range depending on the exact model and the material under test.
Measurement method: Pinless (non-destructive induction/dielectric) — some WM700 variants add an external pin probe for verification.
Effective depth: Manufacturer/reseller pages list nominal depths around 20–40 mm (≈0.8–1.6 in) for the pinless sensors — actual depth varies with substrate.
Material modes & calibration: Many units offer presets for softwood, hardwood and building materials (wall/concrete) — pick the correct mode for better relative readings.
Display & alarms: Color or backlit LCD, numeric/graphic readout, tri-color bar or icons and an audible alarm for fast triage.
The workflow most pros use: (1) sweep large areas in pinless mode to map suspicious zones (watch LEDs/alarms), (2) mark/hot-spot those areas and freeze/save readings (HOLD) or photograph, (3) verify with a pin probe or more formal testing where numeric percent values or contractual acceptance are required. This minimizes unnecessary surface damage while ensuring verification where it matters.
These factors represent the most critical aspects that will impact your satisfaction with this product.
The pinless design makes it quick to scan walls, wood, and flooring without leaving marks. Readings update instantly and the color-coded LCD is simple to understand at a glance. A useful tool for checking moisture before repairs or painting.