Second class levers always have high mechanical advantage. First class levers can have high mechanical advantage, if the fulcrum is close to the load. To recall the order of the levers use the ...

Overall, Lever took 41 wickets in 17 Tests and 11 more in 10 one-day internationals. He played for Lancashire between 1960 and 1976, claiming almost 800 wickets in 301 first-class matches.