new standards of weights and measures. 



IS 



Wires of the following weights were now added : 

 To No. 2. - - ,020 grains. 



3. - - ,050 



4. - - ,002 



5. - - >oo4 



The centre of gravity of the balance was raised, so that 

 by frequent trials, one hundredth of a grain occasioned the 

 index to vary one division. 



The centre of gravity was lowered, so that one-hundredth 

 of a grain was equal to eight-tenths of a division. 



