The peanut class is for scale free flight rubber powered models of either not more than 13'' span or not more than 9'' overall length excluding propeller.
The judging rules used for Peanut scale class are the BMFA-rules, which are also used in the IIFI and British Indoor Scale Nationals competitions:
F4F Peanut [66 KB]
Peanut static score sheet [10 KB]
Rules for all scale classes:
General scale rules [75 KB]
Judges guide [95 KB]