44, Dearborn’s gold standard Balance. 
scales to hang upon, gave the index less motion, (notwithstanding 
the beam was not loaded) than five grains at the same time gave to . 
the index of my beam, while each of the scales was loaded with six 
thousand pennyweights. This experiment was witnessed by the 
cashier and some other gentlemen. One other inconvenience attend- 
ing the common scale beam arises from the lateral vibrations, to 
which it is subjected, by being suspended from above, as all swing- 
upon its centre; but this I do not consider as an object of magni- 
tude; yet it is of sufficient importance to be avoided, when it 
may, especially where minute accuracy is required, as in sealing 
weights, &c.* 
-Tshall now attempt an explanation of the means, devised in the 
construction of my Gold Standard Balance, for correcting or avoiding 
the evils beforementioned. See Fig. 9. 
The largest size, required in Banks, is calculated for sustaining a 
weight in each scale, equal to a quantity of gold amounting to five 
thousand dollars, or between nineteen and twenty pounds avoirdu- 
sees The beam for'this purpose is some a ee oi 
; = , ten ae atte and AS Ise Ulilehn edn 
in each corner for ire it in a level position. Four columns rise 
sufficiently high from the base for giving convenient ‘length ‘to the 
—_ or ps of the seales 5 “two: of these stan 
ni oe _ 
* It is. p r able ‘that ye the ‘want of this minute accuracy, arises pl 
inequality OF Seacidiard Weights, which will discover itself to any one, who 
shall take the trouble to make a comparative experiment. From the instanc- 
s, in which I have compared, a doubt ‘has arisen in ‘my mind, whether 
there are two sets of weights‘on the continent, exactly agreeing with each 
