Rachet – a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction.
rachet
Engineering – making 'things' that work and making 'things' work better
Engineering – making 'things' that work and making 'things' work better
Rachet – a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction.
engineering 4 kids 