i bought a windup toy  to observe his motion

researching

nowadays , different type windup toy in market . i have search some windup toys . you can see it includes animals ,human ,traffic ,robot and insect . and it just tip of the iceberg .

What Makes A Windup Toy Work

i find a reference of What makes a windup toy Work . i think it is useful for me to understand how wind up toy can work and  the windup toy's history .
Windup Toys