523 



From these tables grains and fractions of grains may be 

 converted into their equivalent in grammes, or vice versa, by a 

 simple addition, after removal of the decimal point to left or right, 

 as required, e.g. : 5-31 grammes = 77-161745 4*629704 



+ -154323 = 81-945772 grains. 



Temperature — 

 To convert F. to C. ... F -32 X 5 



0. 



9 



To convert C. to F. ... C x 9 .^^ t 



— = — i- 32 = I 



