http://www.homedepot.com/p/General-Tool ... -2&cj=true
I dont know if can be used on a boat but a good deal for $99
The MMD950 is designed for use in woodworking, water damage restoration, building construction and home renovation. The meter senses the moisture level of a material using either of two techniques: 1. inferring the material electrical conductivity from the current flow induced between a pair of steel pins placed on or into the material. The wetter a material, the higher its conductivity. The MMD950 comes with a remote probe consisting of a pair of replaceable stainless steel test pins at the end of a 46 in. long cable. 2. Measuring the change in the material’s capacitance produced by the slight spreading of an electric field generated by the meter. When the meter is powered on, the spherical sensor at its top generates a three-dimensional electromagnetic wave at radio frequency that extends about 4 in. (100mm) from the meter. When the spherical sensor is placed against a wet material, the increased capacitance of the material distorts the wave’s electric field to an extent that can be measured. This distortion called the fringing field effect is proportional to the material’s moisture level.
Features two measurement modes: pin (conductivity-based) and pinless (based on the fringing field effect)
Spherical sensor gauges moisture level up to 4 in. below a surface
Conventional test pins at end of 46 in. remote cable
Pin measurement accuracy of ±3%
Displays %WME and relative readings simultaneously on two displays: 0 to 99.9 count jumbo LCD with 0.9 in. (23mm) digits, and 40-dot tri-color LED bar graph
Manual or automatic calibration checking
Data hold (display lock) function
User-programmable beeper function, backlight function and auto power off time
Low battery warning
Includes two pairs of replacement test pins
Spare pins storage compartment
MMD950 comes in a custom molded plastic case along with a remote pin-type probe and cable, a 9V battery, two pairs of replacement pins and a product manual
I dont know if can be used on a boat but a good deal for $99
The MMD950 is designed for use in woodworking, water damage restoration, building construction and home renovation. The meter senses the moisture level of a material using either of two techniques: 1. inferring the material electrical conductivity from the current flow induced between a pair of steel pins placed on or into the material. The wetter a material, the higher its conductivity. The MMD950 comes with a remote probe consisting of a pair of replaceable stainless steel test pins at the end of a 46 in. long cable. 2. Measuring the change in the material’s capacitance produced by the slight spreading of an electric field generated by the meter. When the meter is powered on, the spherical sensor at its top generates a three-dimensional electromagnetic wave at radio frequency that extends about 4 in. (100mm) from the meter. When the spherical sensor is placed against a wet material, the increased capacitance of the material distorts the wave’s electric field to an extent that can be measured. This distortion called the fringing field effect is proportional to the material’s moisture level.
Features two measurement modes: pin (conductivity-based) and pinless (based on the fringing field effect)
Spherical sensor gauges moisture level up to 4 in. below a surface
Conventional test pins at end of 46 in. remote cable
Pin measurement accuracy of ±3%
Displays %WME and relative readings simultaneously on two displays: 0 to 99.9 count jumbo LCD with 0.9 in. (23mm) digits, and 40-dot tri-color LED bar graph
Manual or automatic calibration checking
Data hold (display lock) function
User-programmable beeper function, backlight function and auto power off time
Low battery warning
Includes two pairs of replacement test pins
Spare pins storage compartment
MMD950 comes in a custom molded plastic case along with a remote pin-type probe and cable, a 9V battery, two pairs of replacement pins and a product manual