>Use to use those when I was a weather observer in the Air Force back in >1966. > >How do you use them to tune and repair pianos? > > >Wayne Lutzow Well, I don't much. That's why I couldn't justify buying a new one. Doing soundboard work in the shop, for instance, I'd like a reasonably accurate idea of the RH% to estimate relative drying and rehydration rates. Glue open time changes with humidity too, though knowing exact RH% isn't awfully critical. I do carry a little Whatman hygrometer for logging temperature and RH% with tunings, and I've always wanted a simple way to check it's accuracy from time to time. Now, I have a closer standard for calibration. Since slinging a foot long flail with glass tubes full of mercury in the customer's living room would worry me nearly as much as it would the customer, I can carry the digital and save the slinging for the shop, or special occasions. And I dearly love precision tools, which is reason enough for me all by itself. Ron N
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