Scratch & Sketch Extreme You can alter the gears

You can alter the gears using the transmission fork to observe how the speed varies between the drive and driven pulleys

It also serves as a tool to help finetune your motor skills

To work the simple flywheel

and the tension of the rubber band to control the pendulum’s movement back and forth

Scratch & Sketch Extreme You can alter the gearsAs you trace intricate artwork on the black coated pages, a wolf, mandala, night sky, unicorn, and so much more emerge in sparkling foils of silver and green, or colorful swirls! Scratch away the black coating on each page with the stylus included, and see your puzzle solutions come to light in glittery sparkles and colorful swirls! Scratch book contains 10 black coated silver or green glitter pages and 10 black coated colorful swirl pages 20