From the Manufacturer
The slender design of the Wagner L609 Shopline 4% to 22% Pinless LED Wood Moisture Meter, a hand-held LED moisture meter, makes it ideal for testing narrow pieces of lumber such as molding and trim. The electromagnetic technology measures moisture content in hard, soft, and imported species of wood, from 4% to 22%, up to a depth of 1/2 inch. You’ll read boards accurately and instantly from top to bottom and find the LED indicators convenient in dim-light conditions. The pinless design eliminates those unsightly holes left by other meters.
Reads moisture levels between 4 and 22 percent without puncturing your lumber.