Scientific Calculator

The Scientific Calculator is a small device constructed in ancient Greece around 150BC and it was mainly used for accurate astronomical measurements.
It's complexity -comparable to that of a 19th century swiss clock- is admired by historians and scientists and it is often called as "mankind's first computer".

"Scientific Calculator" is an open source, interactive 3D simulation drawn with OpenGLES of the 2 best known models of the Scientific Calculator as developed by scientists, and in the same time a showcase of the capabilities of your android powered handset!
These versions are preliminary ones, without much attention to the relative gear diameters or vertical positions. However, the tooth count of the gears and the operation are accurate.