General Tools Moisture Meter, Pin Type, Digital LCD (MMD4E)

Easy to use with timber

Works well and seems to give accurate readings

A very good moisture meter if only they put more substantial pins on as the tips bent first couple of hard wood samples tested, I wanted to give it five stars even though you get a spare set of pins.

Excellent product,works well and battery lasts for ever

Does what it says

This is the third of this kind of tool I've had and thus far this one actually works! Yay! This is a new brand for me... and it seems pretty good quality. The machine sits well in my hand and the display is easy to read. It doesn't seem to give false readings. I've got a bit of damp wall in the bathroom and this clearly shows exactly where it's a problem and where the wall is dry. Good price in my view.

Super simple and easy to use! I have the two pin probe type and although it has to be pressed into the surface the pins are so sharp that it leaves hardly any evidence of it doing so at all. It also comes with a couple of tiny caps for the pins, so you might want to be careful not only to put them back on the sharp pins after use, but also not to lose them! The user interface and controls are very simple to understand and it even comes with an audible alarm if the substance you’re testing is overly damp. There is a building materials and a wood setting, so it will easily test not only plaster and brick etc, but also timber and wood sheeting etc. It even comes with a battery. The only thing I would like it to have come with, is a pouch, especially as those pins are so sharp and vulnerable. That said, it even comes with a set of replacement pins too! I tested this on multiple materials and it returned reliable moisture readings every time. Sometimes depressingly so, as I tested on an area of plaster that I was hoping wasn’t quite as damp as it turned out it actually was. Ideal though for builders and wood workers alike. A great little meter, it even records readings if you take them in low light area or places you can reach but not actually see. Brilliant.

The meter works quite well on most materials, but for a wall that has just recently been platered and painted I had to be very carefull not to make too much pressure otherwise the wall can become damaged. For wood it is excellent, but again if it is for indoor freshly painted frames etc then be carefull with the pressure on the pins.

It's the best from all th meters available in market

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. Therefore, if you are concerned about the holes, consider a "pinless" moisture meter, which are much more expensive. The instruction manual lists other uses such as testing the moisture content of powders (for any scientists out there who need to measure such things for making standard solutions from scratch) and to test the dryness of a wall or furniture before painting or finishing. It also shows instructions for how to track down a leak using the meter. There's a funny picture in the instructions with the caption "be careful not to hurt your hands on the pins." Although, I did "test" the moisture content of my husband's leg. Don't worry, I didn't draw blood. Overall, for the price, the features, and the product functionality (so far), I would say this is a great buy. Also, we got it shipped quickly via Amazon.com. It arrived two days after we purchased it. Yay! UPDATE (7/31/2010): The pins broke when we were testing some brazilian walnut - one of the hardest woods out there. But I read in the instruction manual that pins were replaceable. I emailed General Tools through their website and got a quick email back. Less than a week later, I had two new prongs FOR FREE in my mailbox. Customer Service was AMAZING! The replacement prongs are much better than the ones that came with the meter. The new ones are shaped like little cones and have worked great on the harder woods.

I bought this gauge mostly to check if firewood is dry enough to use in our wood heater. It works great for that purpose, but it seems the manufacturer designed it to show if construction materials are dry enough to use without risk of mold occurring. I expect it would work well for that as it is easy to use and easy to read the display. An added bonus in this price range is the calibration contacts in the cap. You can check it before you use it, to make sure it is reading accurately.

Very useful and we found something not new damage in the wall we can’t see it but with this we discover it .

Excelente artículo y servicio. Muy fácil de usar.