If you want to find the size of a basketball, you can use a normal meter stick to measure the diameter. You should get a value of around 0.24 meters. Please don't use inches—they are just harder ...

If you want to measure something too small to easily resolve by eye, you can do it with a laser pointer, a meter stick, and a little physics. Newsletters Amazon Prime Day Share a News Tip.

Pedal-maker Xpedo debuts a new cross-discipline Omni powermeter family that will give any bike accurate dual-sided ...