A tape measure comes with several markings that some may not know, like the black diamonds. Here's what those symbols mean ...

If the container is a square or rectangle, use the ruler or tape measure to find the length ... try Archimedes' problem (on a slightly smaller scale) by estimating the number of grains of sand ...

The common thread is the use of tape measures for the elements of the aptly named turnstile antenna, a tried and true material for lightweight, foldable antennas that amateur radio enthusiasts ...