Calipers are used mainly for measuring linear dimensions. Read our guide to learn more on how to use and read your calipers.

Vernier calipers are a rugged and affordable way to make precise measurements. They can look intimidating, but they're easy to use if you follow these tips.

This article was originally published with the title “How to Measure Closely with Ordinary Calipers” in Scientific American Magazine Vol. 108 No. 22 (May 1913), p. 495 doi:10.1038 ...