Device for cancelling inside force of pickup arm of record playe

Device for continuous adjustment of the stylus pressure

Device for correcting offset angle of pickup arm in tracking pic

Device for cutting a sound groove on a disc recording medium

Device for cutting a sound groove on a disc recording medium

Device for dividing ice-hockey rinks

Device for doing situps

Device for doing situps

Device for driving a simulated flying object

Device for exercise and/or therapy

Device for exercising muscles associated with elbow tendonitis,

Device for exercising the mid-body region

Device for exercising the muscles determining body posture

Device for facial exercising to be applied in the oral cavity

Device for improving physical fitness

Device for in place swimming

Device for loading a recording disc in a recording reproducing a

Device for maneuvering scenery

Device for manipulating cadavers

Device for manually controlling movement of pickup arm in automa