Bill wrote;
> ...<snip>...On a set of scales the weight of the spinning mass system
> can be made to reduce OR increase.
You bring up three good points, specifically;
windage - the effect air would have where the thing acted like a fan,
blowing air down or up (measure both ways to get a +/- number)
twisting of a fabric string (switch to monofilament fishing line)
creep of possible linear friction or jitter that could distort the
measurement (should average out in a slow scale response)
-- Jerry W. Decker / jdecker@keelynet.com http://keelynet.com / "From an Art to a Science" Voice : (214) 324-8741 / FAX : (214) 324-8741 KeelyNet - PO BOX 870716 - Mesquite - Republic of Texas - 75187