|  |  |  |  |  |  |  |  | 
   
    | • | How many nos. can
    I write down, 
 |  | 
   
    |  | 
   
    |  | legitimately,
    when I make a measurement? 
 |  | 
   
    |  | 
   
    | • | You are allowed
    to write down all nos. that 
 |  | 
   
    |  | 
   
    |  | are measured with
    certainty plus one that is 
 | 
   
    |  | 
   
    |  | estimated, The
    no. of the recorded figures 
 |  | 
   
    |  | 
   
    |  | (including the
    estimated no.) are the no. of 
 |  | 
   
    |  | 
   
    |  | sig. fig. in the
    measurement. 
 |  |