[Reno89519]

At pizza sizes, not important, but at orbits, say for the International Space Station, which averages around 248 miles, a few extra decimal places makes an incredible difference.

For example, if you know the speed (around 17,500 mph) and altitude, you could calculate when it will be over a specific point as it orbits the Earth.

Or, what about a pinpoint laser to bounce off Mars, like a shotgun, you could calculate how much to lead that laser.

[lee martell]

An industrial tool for extreme measures of dimension.