左右手定則演示器用于演示和說明：1、磁場對電流作用時，磁場方向、電流方向和磁場對電流作用力方向之間的關系——左手定則。2、在電磁感應現象中，磁場方向，導線運動方向和感生電流方向之間的關系——右手定則.
J2415 Right-hand and  Left-hand Rule Demonstrator
It is scheduled for presentation and demonstration device: 1, on the current role of the magnetic field, magnetic field direction of the current direction of the magnetic field and current direction of the relationship between the force - left-handed rule. 2, the phenomenon of electromagnetic induction, the magnetic field direction, the direction of movement and lead induced current direction of the relationship between - right-hand rule.