Chopping down with a chainsaw is one of the most dangerous jobs in agriculture, forestry and horticulture. Therefore, it is required that the chain saw operator has mastered his craft and works professionally. After a tree has been felled, the remaining rootstock of the felled tree shows whether the chainsaw operator has worked expertly and safely. The "rootstock reading", the cane assessment, shows whether the most essential part of expert work is available when felling trees. Chainsaw operat