This easy-to-build clock whips up in a jiffy, and will lascinate young minds with its turning cogs and swinging pendulum. The clock is spring-driven, so requires no batteries, and is the perfect way to teach children basic mechanical principles.
This easy-to-build clock whips up in a jiffy, and will lascinate young minds with its turning cogs and swinging pendulum. The clock is spring-driven, so requires no batteries, and is the perfect way to teach children basic mechanical principles.