This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment Perhaps a solution would be to purchase a similar magnet and either = recalibrate the measuring marks, or adjust the magnet position. Radio = Shack or any scientific supply place will have quite an assortment of = magnets - so you can come close right off the bat. Make a few boards of = different known thicknesses. Use a magnet slightly more powerful than = original. Apply thin veneers of wood to magnet to adjust its distance = from board surface. Find the veneer thickness that makes the set-up = properly calibrated for the several test board thicknesses. I should = think that would work. But maybe not. Likely worth a try. Terry Farrell ----- Original Message -----=20 From: Erwinspiano@aol.com=20 To: pianotech@ptg.org=20 Sent: Thursday, January 08, 2004 10:56 PM Subject: soundboard thickness gauge. Euro techs help please List Some years ago I acquired a tubular device that incorporates the use = of a small ceramic magnet. The thickness device consist of a clear 1/2" = tube tube with metric markings on it on one end. On one end is a magnet = fixed in the bottom. On the inside of the tube is small coil spring to = which a thread is attached to knob on the top of the tube.=20 When measuring board thickness the magnetic end of the tube is = placed upright (or perpendicular to) on the board & a small ceramic = magnet is placed on the under side of the board. Then the knob atop the = tube is pulled up until a click is heard at which point the marker on = the inside of the tube is aligning with a measure mark i.e. 6,7,8,9, mm = etc., indicating the boards thickness. Very ingenious and very accurate MY problem you see is that I've lost the ceramic magnet. It comes = with two. the smaller for thinner pieces of wood (violin tops etc) I = believe. This device was purchased in Europe from folks who do violin = building. I acquired it from a tech who did the original purchase. I = have an address and phone no. printed on the inside of the case. Can any = of you over there shed some light on or are familiar with these folks or = the device. I'd very much like to get a new magnet. Address etc.=20 Dipl.ing. Annette Blau Messgerate=20 Angermairweg 7 D-82335 Berg Tele,: 08151-95431 Fax 08151-95432 Is this German Any light shed on this is greatly appreciated. I did try to call = once but couldn't get any where. This was a pricey little device & I'd = like to utilize it again. Maybe others are interested as well The great = thing is you can measure thickness of any soundboard in a strung pianos = or anywhere on a board while diaphramizing without drilling any unsitely = holes etc. Thanks ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/f3/6a/f1/2d/attachment.htm ---------------------- multipart/alternative attachment--
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