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How to measure an inch without a ruler

Updated April 17, 2017

There comes a time in every person's life when they need to measure a small object but they do not have a ruler to do so. By using your thumb, you are able to measure an inch at a time to determine the overall length of an object. Since nearly every person has hands, measuring with a thumb is a relatively simple job.

Place the object that you intend to measure on a flat surface.

Place the tip of your thumb at the edge of the object and measure back to the first knuckle. The 1-inch mark is established by the line on your palm side of the thumb.

Hold the 1-inch mark with the tip of your index finger on the opposite hand and slide the tip of your thumb to the mark to continue measuring inch by inch.

Things You'll Need

  • Thumb
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About the Author

Nicole Byerly has been writing since 2003. She has published multiple works that have appeared in "Campus Philly." Byerly is pursuing a Bachelor of Science in cybersecurity at Utica College.