Rubber Band Engineer

This pocket edition of Rubber Band Engineer is easy to take with you, so you can build slingshot-powered rockets, catapults, improvised darts, or crossbows wherever you go.

Only requiring household tools such as paper clips, pencils, and popsicle sticks (and naturally copious amounts of rubber bands), this book is your master's course on getting your doctorate in rubber band-age.

• Dimensions: 21.1 x 16.3 x 1.8 cm (8.3″ x 6.4″ x 0.7″)

• Weight: 362.9 g (12.8 oz)