In the balance, car brake pedal, sewing machine pedal, iron scissors, barber scissors, cloth scissors, guillotine, driver, fishing rod, tweezers, wrench, chopsticks, claw hammer, trolley, steel wire pliers. Among them, 1: belongs to labor-saving lever; 2 belongs to labor-saving lever; 3 class arm lever
Belong to the labor-saving lever: car brake pedal scissors iron scissors knife driver wrench
Claw hammer, handcart, wire pliers
The utility model belongs to a laborious lever; a sewing machine, a pedal, a hairdresser, a scissors for cutting cloth, a fishing rod and tweezers
chopsticks
Equal arm lever: balance