Welcome to the Thursday Toolkit series, about tools for building Physical Computing projects.
Ehm, well, not quite :) … here’s how people defined and measured distances some 35 centuries ago:
It’s a stone, roughly 1 meter long, which can be found in the Istanbul Archaeology Museum. In more detail:
Not terribly convenient. I prefer something like this – have had one of them around here at JeeLabs for ages:
Then again, both of these measuring devices are quite a long shot (heh) from today’s laser rangefinders:
For about €82 at Conrad – no, I don’t have stock options, they are privately owned :) – you get these specs:
That’s 2 mm accuracy from 0.5 to 50 meters, i.e. one part in 25,000 (0.004%). Pretty amazing technology, considering that it’s based on measuring the time it takes a brief pulse to travel with (almost) the speed of light!
But you’ll need a 9V battery to make this thing work – everything needs electricity in today’s “modern” world.