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  • General Tools & Instruments MMD5NP Moisture Meter, Pinless, Digital LCD
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General Tools & Instruments MMD5NP Moisture Meter, Pinless, Digital LCD

557 customer reviews

List Price: $89.99
Price: $48.98 & FREE Shipping. Details
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Pinless
Digital LCD
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  • Enables moisture measurement of a variety of materials without having to pierce the material's surface
  • Has a range of 0.0 to 99.9% WME for wood, 0.0 to 56.5% WME for building materials, and measures up to a depth of 3/4 in
  • Sports a Jumbo LCD display with intuitive on-screen icons for low/medium/high moisture content, and wood/concrete mode
  • Includes audible peak reading alert
  • Displays low and very low battery warnings
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$48.98 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

General Tools & Instruments MMD5NP Moisture Meter, Pinless, Digital LCD + General Tools & Instruments IRT207 Heat Seeker Infrared Thermometer, Mid-Range, 8:1 + Rain Bird P2A Pressure Gauge
Price for all three: $77.94

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Size: Pinless | Style: Digital LCD
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Product Description

Size: Pinless | Style: Digital LCD

Product Description

General Tools MMD5NP Moisture MeterGeneral Tools MMD5NP Moisture Meter Features: Moisture meter Non invasive measurement technique Jumbo display Wide measurement range Intuitive on screen icons Low, medium and high moisture content modes Wood and concrete modes Hold function Audible peak reading alert Auto calibrating

From the Manufacturer

The wide range MMD5NP enables moisture measurement of a variety of materials without having to pierce the material's surface. The unit has a range of 0.0 to 99.9-percent WME for wood, and 0.0 to 56.5-percent WME for building materials, and measures up to a depth of 3/4-inch. It features a jumbo LCD display with intuitive on-screen icons for low and medium and high moisture content as well as a wood and concrete mode.

Product Information

Size: Pinless | Style Name: Digital LCD
Technical Details
Part Number MMD5NP
Item Weight6.9 ounces
Product Dimensions1.4 x 6.2 x 10.2 inches
California residentsClick here for Proposition 65 warning
Item model numberMMD5NP
SizePinless
StyleDigital LCD
Item Package Quantity1
CertificationNo
Batteries Included?Yes
Batteries Required?Yes
Warranty Description1 year parts
  
Additional Information
ASINB001CXG7H4
Best Sellers Rank #46,558 in Home Improvement (See top 100)
Shipping Weight10.4 ounces (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableJune 22, 2008
  
Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
Warranty, Parts: Parts
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Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

258 of 267 people found the following review helpful By D. L. Pascual on July 12, 2010
Style Name: Digital LCDSize: Pin Type Verified Purchase
We were getting hardwood floors installed - or so we thought - when the installers notified us that they could not do the installation because the wood in our house had acclimated to 6.4% moisture and our subfloors were at 12.8% moisture. The installer found a leak in our water softener line which we got fixed the next day. Unfortunately, we had no way of knowing (ourselves) when to call the installer back. Hence, we purchased this meter.

As far as we know, it works great. We aren't too concerned with the overall accuracy of the instrument, +/- 3% is just fine for us as we're looking to compare the difference between two materials in our home (assuming the error is consistent between those readings). The resolution of the meter is 0.1%.

Other things you might want to know:
- It comes with it's own 9v battery.
- It measures wood between 5 - 50% and 1.5 - 33% for other building materials.
- It has a hold feature which allows you to save the current reading so you don't have to keep the meter jammed in the material you are measuring.
- It beeps to let you know when it is done measuring. (Although, you can turn this off. We did accidentally and then figured out how to put it back on. We don't know why, but it has 8 different tones from which you can select.)
- It has a toggle button between measuring wood and concrete (or other building materials).
- The instruction manual is easy to read and follow. They come in English, French, and Spanish.
- It uses a two pin system to measure the electrical resistance of the material between the two pins. This is then calibrated against moisture content to give you the reading as a percentage. This means that it will make two small pin holes in the wood you are trying to measure.
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92 of 101 people found the following review helpful By Jim McCorison on November 20, 2010
Style Name: Digital LCDSize: Pin Type Verified Purchase
I bought the General Tools MMD4E Digital Moisture Meter to check the moisture of some flooring and trim moulding for house I am building. At the price of this product, I don't expect much in the way of absolute accuracy. Instead what I want is relative accuracy. In other words, I don't care if the wood has 8% or 10% moisture content. What I want to see is, what does the wood do over time. Once the reading stops dropping, the wood has mostly gotten as dry as it is likely to get in its present location. I tested the meter by taking a variety of readings to see if I could reproduce a giving reading. I went from dry wood to wet and back to dry. It seemed to be able to reproduce readings with a reasonable reliability.

The meter has a peculiarity that I think is responsible for another reviewer thinking his meter was broken, resulting in a 1-star rating. If the meter has not been turned on for a while, you have to hold down the on/off button for 4-5 seconds to turn the unit on. I've used a number of products which require you to hold down the power button for a prolonged period to prevent turning it on accidentally, but nothing as long as this meter. To make matters worse, the documentation says nothing about this feature. I can easily see why some people might think their meter is broken. A strange twist on the on/off is that if you turn the meter off, then turn in right back on again, you only have to push the power button for about a second for it to turn back on.

I rated this 4-stars because of the accuracy Vs resolution of the display. Why do they have a display with a resolution of 0.01% on a meter with an accuracy of +/- 3%? In trying to reproduce the same reading multiple times I typically saw +/- 0.5%. Realistically the meter should not display readings to a tenth.
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68 of 75 people found the following review helpful By John Seybold on June 8, 2010
Style Name: Digital LCDSize: Pinless Verified Purchase
I was excited to receive this moisture meter, as I had a set of resawn walnut boards to check for uneven moisture content on the inside and outside faces. My excitement turned to mild concern when I started to read the instructions: "Press either button to active the sensor". OK, I can roll with that, I guess, although a later item, "Buzzer sounds when the reading changes every increasing digit" left me somewhat bemused. Funnily enough, the instructions also included a disclaimer: "Notice: we are not responsible for typographical errors". Um, OK, then who is responsible?

Anyway, I "actived" the sensor, pressed it as described to one of my boards and...got a reading of 59.9% (the maximum). "Hmm", I thought, "those boards have been drying for two years - that can't be right." So, I tried a piece of beech, nice and dry when I bought it, that's been in my shop for a year or so, planed mirror smooth and thus eliminating the chance that a rough surface could be the problem, and got a reading of 8.0%. "That's more like it!", I thought, "Maybe my first attempt was a just a fluke." Then I re-measured the beech that had given me a believable reading. This time, I got 14%. Another attempt netted me 29%, then 7.4%. So, I tried a few other pieces of wood, with similarly wildly varying results. Fooling around with the unit, I found that pressing more on one corner or the other would cause huge swings in the reported measurement. When I held it in my left hand, I got a different result than when I held it in my right hand. Five minutes later, it was back in its box and on its way to the Amazon returns department.

Maybe this was just a defective unit. Who knows?
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General Tools & Instruments MMD5NP Moisture Meter, Pinless, Digital LCD
This item: General Tools & Instruments MMD5NP Moisture Meter, Pinless, Digital LCD
Price: $48.98
Ships from and sold by Amazon.com