IEC60335-2-92 Standard Figure 103 Foot Probe

Generally, a shield must prevent a foot probe from entering the path of the mower blade or
from forcing any part of the mower into the path of the blade. The only difference between
the UL Foot Probe Model FP10 and International Foot Probe is the length of the simulated leg.  

The standard requires rotary power mowers to have protective shields. These shields prevent
the operator's foot from contacting the blade, either under the mower's deck or in the discharge
chute area, when the operator has his or her hands on the mower's controls. Generally, a shield
must prevent a foot probe from entering the path of the mower blade or from forcing any part of
the mower into the path of the blade. 

Reference Standard: IEC60335-2-92 Fig 103,UL82 and UL1447.