A growing set of weights, measures and units conversion/calculation modules. It allow users to discover things like how many seconds old they are, the difference between a gallon in the USA and a gallon in the UK, how many nanometers in an inch, how many quarts in a chaldron, and what the heck a nebuchadnezzar is. Every module has its own on-line info system built in.
Search tips: Use the selector dial. Without clicking, move your mouse cursor clockwise around the dial as if you were actually spinning a dial. Don't click until you find the megaConverter title you want.