On Tue, 10 Jul 2001, Bill Potts wrote: > No, Gene, I absolutely don't mean devices with springs... Bill, Allow me to quote from the McGraw-Hill Encyclopedia of Science and Technology under the entry "Balance": "There are many types of balances: spring-type scales, single-lever-deflection types, precise two-lever-arm designs, torsion designs, substitution designs, ..." "Historically, the word 'balance' referred to a two-pan scale ..." "In contemporary usage, the word 'balance' may be used, but the method is quite different from the classical two-pan design." "The concept of the newest balance design no longer relies on mechanical deflection. Determination of mass is based on the principle of electronically controlled electrical force compensation." More than two full pages are devoted to particular designs. Gene.
