# How to Measure an Inch Without a Ruler

The bone of your index finger, between the first and second knuckles, measures about an inch.
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For precision crafts such as quilting and woodworking, it pays to keep a ruler or measuring tape on hand. However, for many other crafts -- from miniatures to scrapbooking to certain knitting or crochet projects -- you can make do with a close estimate. You can use parts of your body, items from your wallet or common household objects to gauge an inch fairly accurately.

1. Between the first and second knuckles on your index finger

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Crook your index or pointer finger; the bone between the first and second knuckles measures about an inch long.

2. Your thumb from tip to first knuckle

Hold your thumb against the materials you're measuring. For most people, the thumb measures about an inch from tip to first knuckle.

3. One-quarter width of the palm of your hand beneath the knuckles

Compare the width of your hand to your crafting materials. The width of the palm of your hand, right beneath the knuckles, is about 4 inches on most people -- so one-quarter of that distance would be 1 inch.

1. Short edge of license, credit card is two inches long

Measure your materials against the short edge of your driver's license, credit card or just about any other rigid plastic card in your wallet. These cards are almost always standardized to measure 2 inches along the short edge, so half of that is 1 inch.

2. Business cards are 2 inches along the short edge

3. Fold a dollar bill, it is 1 and 1/4 inches

Fold a dollar bill in half the long way. In the United States, all modern paper currency -- dollar bills and any other denomination -- measures 2.5 inches by 6 inches. Folding it in half doesn't give you an exact inch, but at 1-1/4 inches, it's still a pretty close measure.

### Other Household Objects

1. 3 by 5 inch index cards

Check your index cards. Fold a 3-by-5-inch index card into even thirds along the long axis, and you have an accurate inch-long measure. Fold a 4-by-6-inch business card once along the long axis, then again along the same axis, to get an inch-long measure along the short end.

2. Quarters are 7/8-inch wide