Learn how worm gears are used to greatly lower rotational speed and how screws can convert circular to linear motion while greatly increasing force. Build 5 working models, a screw press, a folding lifting platform, 2 cranes and a vice. A 36 page activity book is included with innovative experiments and detailed explanation of the different technological principles applied! Booklet with detailed building instructions also included.

The set includes a 31 page, colorful, highly illustrated activity book which explains the science and applications of screws and worm drives with the following chapters:

• What will we learn?
• A little history of screws
• What is a screw anyway?
• Screw as an inclined plane
• What is a worm drive anyway?
• Big quiz time
• Comments and solutions
• Award time

Brand:	Tinkering Supplies
Brand Part Number:	4416
Our Part Number:	h4416