The Master Theorem - A Book of Puzzles, Intrigue and Wit by M. Art & Photography build an awesome mechanical hand

build an awesome mechanical hand that uses hydraulic power to simulate the movements of the human hand--no motors or electricity required

then more minor

reflective chrome-treated base and cap

The wireless remote control ensures smooth steering and precise maneuverability

watch the little astronaut through the rocket window as it bobs and floats ‘in space’

The Master Theorem - A Book of Puzzles, Intrigue and Wit by M. Art & Photography build an awesome mechanical handThe Master Theorem puzzle book contains over 40 original, beautifully designed puzzles, with three hints and a complete solution each. Solvers will enjoy weeks of neuron growth as they become experts in codes, ciphers, and the mysteries of the universe. Paperback: 212 pages Recommended for ages 13+