>From the Electrophysics Moisture Meter web page: http://www.electrophysics.on.ca/ "At Electrophysics you can choose from a wide range of Pin Type and Pinless moisture meters. All our meters incorporate rugged reliable solid-state electronic components and modern advanced integrated circuits. In the critical moisture range of 6% to 12%, pin-type meters are accurate to half of one percent, while our pinless meters are accurate to one percent, and we offer a two year unconditional guarantee. All models use standard, readily available, 9-volt batteries. Complete information, instructions, and batteries, are included with every meter. >From the makers of the most accurate moisture meter tested in the extensive review by Fine Woodworking, April 1994." I should think that the pin-less type only being accurate to 1% might not be real desirable, but the pin-type that are accurate to 1/2% is getting to where it would be giving good information. And certainly if you were to monitor the environment, use those graphs to figure out what the MC should be, based on temp and RH, then see what it is with the moisture meter. Do that several times and you can see how consistent your moisture meter is. You may for instance observe that it is always 0.8% off, but if it is consistently 0.8% off, you can simply do a simple correction for better accuracy. I'd kinda hate to be poking little holes all around a panel though. And these meters indicate that work down to 1" depth in the wood. I wonder, if your board is 1/2" thick, might the thin board throw the meter off - less thickness, less resistance, or somesuch? Terry Farrell ----- Original Message ----- From: "Joseph Garrett" <joegarrett@earthlink.net> To: <pianotech@ptg.org> Sent: Thursday, January 24, 2002 9:00 PM Subject: "Farrell"/moisture meters > It far easier to control the moisture content of the board, than the > surroundings. MHO is that a Moisture Meter is essential to any high-end wood > working project. Should pay for itself in short order. > Regards, > Joe Garrett, RPT, (Oregon) > >
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