Perfect for any building inspection or restoration job. Easy to operate and easy to read. Get clear accurate readings using built in wood scale and a numerical reference scale for measuring relative humidity in non-wood materials. Features: Popular analog readout. Two scales: Wood Scale - 6% to 40% moisture range. Use for flooring and building material such as wood studs, floor joists, sub-floors. Reference Scale reads from 0 to 100 on a relative basis. Use on non-wood materials such as concrete, plaster, and insulation.