A guy named Dave Jones has created some seriously geeky scientific calculator wrist watch. The watch was built from standard off the shelf components and can perform a variety of RPN/Algebraic scientific functions.The project started because of David breaking his own Casio CFX-400 series scientific calculator watch after using it for 10 years. He just couldn’t live with out it. Unfortunately these type of calculator watches have been unavailable for 20 or so years with the latest only performing the basic 4 functions.

The screen on the home-made version measures 53mm x 20mm and is a 16×2 line LCD which is adequate for a number of calculations. The version pictured above is a second prototype which appears to have just been finished last month.

For full instructions check out CalcWatch.

Via: Geeky-Gadgets