to ascertain a Standard of Weight and Measure. 141 
w, to check the vibrations of the scales q and r, and bring them 
more speedily to an equilibrium, y z is a table, whereon the 
whole is placed, to raise it to a height convenient for experiments. 
To use with this beam, I had three sets of weights made, viz. 
The 1st set or series of 15 weights, rising in a duplicate pro- 
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N. B. The fractions of a grain are 
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made of fine wire flatted. 
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