On Sat, 5 Apr 2003, Jim Elwell wrote:
... not exceeding 5% error with any of my weights (5 g through 1 kg).
"mass standards" (5 g through 1 kg), are not forces (weights), either in a laboratory or in a kitchen.
... was never off by more than 1% with any of my calibration weights.
Are your physical standards calibrated in newtons, and if so, at what location?
Expanding on Gene's remarks, Jim's calibration "weights" are masses, Although his scales measure force of gravity, they are graduated to show mass at a representative loocation on the surface of the eaath. On the moon they would show 1 kg when weighing a 7 kg mass. A balance would measure mass correctly on the earth and on the moon. Toledo Scales have (or had) the motto "honest weight, no springs", they should have said "honest mass, no springs".
. . -- Joseph B. Reid 17 Glebe Road West Toronto M5P 1C8 Telephone 416-486-6071
