Precision Pin-Type LCD Moisture Meter with External Pin-Type Probe


Precision Pin-Type LCD Moisture Meter with External Pin-Type Probe

The #MM70D can accurately measure the moisture content of wood and timber. It can also be used on building materials, paper, leather, powder and cloth.


Best For:



  • 1% accuracy
  • Calibratable for any of eight wood species groups
  • Stores/recalls 99 readings
  • Min/max/avg session values + data hold
  • Backlit dual-readout LCD
  • Analog output via RS-232 jack
  • Automatic temperature compensation (ATC)
  • Auto power off
  • Made in Taiwan (TAA-compliant)


  • Moisture measurement range: 5.5 to 99.9% Wood Moisture Equivalent (WME)
  • Moisture measurement accuracy/resolution: ±1%/0.1%
  • Memory capacity: 99 readings
  • Analog output: 0 to 1 VDC (10mV/%WME)
  • Pin lengths: 0.45 in. (11mm) on meter; 0.5 in. (12.7mm) on external probe
  • Auto power off: After 2 minutes of inactivity
  • Operating temperature: -4° to 131°F (-20° to 55°C) @<80% RH
  • Weight (including battery): 5.5 oz. (155g)
  • Power source: "9V" battery (included)


  • #MP7021 external pin-type moisture probe
  • One pair of 0.9 in. (23mm) long pins
  • Soft pouch
  • Battery
  • 1-year limited warranty


  • 6.0 x 2.2 x 1.26 in. (153 x 56 x 32mm)


Do the pins have to actually go into the material?

For the most accurate reading possible, the pins should be inserted into the object. Do not press the pins too hard. 

Can my moisture meter be used on bamboo?

Our moisture meters are not calibrated specifically for bamboo. You will need a moisture meter with an adjustable specific gravity setting. At this time we do not carry such a meter.

Can my moisture meter be used on ceramics or fiberglass?

Our moisture meters are not calibrated for ceramics or fiberglass in terms of WME readings. However, our pinless moisture meters could give relative readings on these materials..

Are there any moisture meters which have a NIST Certification?

We currently do not offer any type of certification for our moisture meters. They would need to be sent to a certification lab for that.

What is the longest pin sensor General carries?

We carry a 5” deep wall moisture sensor which is compatible with models MMD950 and MMD900.