It’s almost hard to categorize this free Mac OS X utility, but here goes: Meander is a way to measure things on your screen, using a piece of digital string. Shiela Dixon’s (the developer) description: How long is a piece of string? As long as you can see it on your screen, you can now find out! Meander is a little application which can measure routes, or shapes, or anything which you can see on your screen.
The major change in version 0.5: Scale can now be measured at any angle, so calibration can be made from a vertical scale, or any known distance between two points.
It’s a neat little application if you have messed around with trying to gauge distance on your display.