This publication from the Walterscheid corporation contains many pictures of safe practices around drivelines (also known as power-take-off or PTO shafts) on large equipment such as tractors.
Driveline Safety Coloring Book
This publication from the Walterscheid corporation contains many pictures of safe practices around drivelines (also known as power-take-off or PTO shafts) on large equipment such as tractors.