   7. Select temperature scale
This item  has  four  options;  C,F,K,R;  (Celsius,  Fahrenheit,  Kelvin  and 
Reaumer). The default is C. The horizontal curser  keys  scroll  through  the 
options, or the choice can be  made  directly  by  pressing  the  appropriate 
letter key. 
   8. Select thermocouple type
This item is used to select the thermocouple type in a similar manner to  the 
temperature scale. The options are  S,R,J,K,T,E,B,N;  the  default  being  K. 
Again, the letter key can be pressed directly or the options can be  scrolled 
through with the horizontal curser keys. In either  case,  not  only  is  the 
letter displayed, but also the thermocouple composition and the corresponding 
part number of BS 4937.
