General Tools MMD8P Precision Multi-Species Wood Moisture Meter

Minimum Purchase:
1 unit
  • General Tools MMD8P Moisture Meter
  • General Tools MMD8P Moisture Meter Side
Price: $199.00


General Tools MMD8P Precision Multi-Species Wood Moisture Meter

Ideal for measuring the moisture content of 48 specific types of wood or lumber with temperature compensation.

The Precision Multi-Species Wood Moisture Meter (MMD8P) is designed for use in woodworking and lumber selection or purchasing. It’s ideal for measuring the moisture content of 48 specific types of wood or lumber, with temperature compensation. The MMD8P is the first moisture meter on the market with an OLED (Organic Light Emitting Diodes) display, which provides extraordinary contrast and extra clarity in outdoor lighting conditions. The meter displays a code number and the corresponding species name of the wood being measured. This is far more convenient than models that display only a code number that users have look up in a manual to match to a species name.

The MMD8P allows users to compensate moisture measurements for the effect of ambient temperature (e.g., taking lumber from outdoors to indoors, from kiln to outdoor, which greatly improves the accuracy of readings. The MMD8P also can measure and display ambient temperature and relative humidity (RH) alongside the moisture level measurement. What’s more, it allows for storing and recalling up to 100 moisture measurement records including the moisture level measurement, number and name of the wood species tested, ambient temperature and relative humidity at the time of measurement and any temperature compensation applied. Some comparable models offer data storage but do not allow as many parameters to be stored.

  • First Moisture meter with super bright and sharp OLED (organic light-emitting diode) dot matrix display
  • Incorporates 48 industry-standard moisture-resistance curves
  • Joystick makes species selection fast and easy
  • Also measures and displays ambient temperature (in °F or °C) and RH (Relative Humidity)
  • Measurements can be compensated for ambient temperature, improving precision
  • 99 record memory with manual or automatic (time-based) recording
  • Multiple display options, including analog bar graph
  • Measurement hold button
  • Audible moisture alarm
  • Pin cover doubles as calibration checker
  • Replaceable pins
  • Auto power off function (can be disabled) with adjustable "time-out" trigger
  • Separate remaining battery charge and low battery indications


Display Type:

  • Yellow OLED in 128 x 64 dot matrix format

Display Size:

  • 1.54 in. (39mm) diagonal

Moisture Measurement:

  • Range: 5.3 to 40% WME (Wood Moisture Equivalent)
  • Accuracy/Resolution: ±(3% of reading + 5 digits)/0.1%

Ambient Temperature Measurement:

  • Range: 0° to 176°F (-18° to 80°C)
  • Accuracy/Resolution: ±1.8°F (1°C)/0.1°

RH Measurement:

  • Range: 20 to 95%RH
  • Accuracy/Resolution: ±5% of reading/1%

Temperature Compensation Range/Resolution:

  • 0° to 255°F (-18° to 124°C)/5°F

Number of Species Moisture-Resistance Curves:

  • 48

Memory Capacity:

  • 99 records

Auto Memory Recording Sampling Rate:

  • Adjustable from 1 to 99 seconds

Auto Power Off Trigger:

  • Adjustable from 1 to 99 minutes of front-panel inactivity

Pin Length:

  • 0.2 in. (5mm)

Low Battery Indication:

  • <6.5VDC

Operating Temperature:

  • 0° to 122°F (-32° to 50°C)

Calibration Check Point:

  • Approximately 15.9% ±3% WME @ room temperature


  • 6.6 x 2.7 x 1.25 in. (168 x 69 x 32mm)

Weight (including battery):

  • 4.6 oz. (130g)

Power Source:

  • 1 “9V” battery (included)


  • MMD8P Moisture Meter
  • "9V" Battery
  • Custom Hard Carrying Case
  • User's Manual
  • 1 Year Limited Warranty



Software / App

View AllClose