Review on ๐ ๏ธ ROKR Perpetual Mechanical Engineering Supplies: Unbeatable Efficiency for Engineers by Robert Goodlow
Imaginative, fun and stimulating desk toy
The assembly instructions are simple, although the wooden connecting pins can easily be lost. It is incomprehensible to the mind to hold a calendar for 20 years in your hands! The gearing system is incredibly intuitive and I often look for reasons to compare it to future dates (unfortunately only 2018-2040). It even accounts for leap years correctly! This makes a great desk toy or conversation piece and is very well detailed. I hope they do a bigger one to cover more time or do a metal version but it's awesome!
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