If it sags, your measurement will be off. With the hook pressed in place, pull the tape blade out until it spans the distance you’re measuring.
If you aren’t measuring something you can latch onto – the distance across a door frame, for example – press the hook against one side to ensure an accurate reading. When using a retractable tape measure, you’ll have a small metal hook at the end of the tape, which you can use to grab onto the edge of what you are measuring to hold the blade in place. Looking at the example, if you measure something past the 28 th centimeter marking to the third millimeter, you would say it measures 28.3 centimeters long.
The smallest markings are millimeters, or one tenth of a centimeter. There is a smaller marking exactly halfway between the centimeters for ease of reading. The large, numbered markings are centimeters. If you have a metric tape measure, the numbers should be read like this: There are 10 decimeters in a meter, 10 centimeters in a decimeter, and 10 millimeters in a centimeter. Numbers shown represent meters, decimeters (sometimes shown in red-see example picture), and centimeters. On a metric tape you will basically see markings for meters, centimeters, and millimeters. Most will show fractions down to eighths of an inch. These are known as ‘Fractional Read’ or ‘Easy Read’ blades. Some tape measures make it easier to decipher the markings by calling out the fractional equivalents right on the face of the blade. For example, the second eighth-inch marking after the inch marking is a quarter inch. Remember that two sixteenths of an inch equals one eighth, two eighths of an inch equals one quarter, and 2 quarters equals one half. On some tapes, quarter inch marks are the same size as eighth-inch marks. These are smaller, sometimes thinner markings, evenly spaced between the half-inch and inch marks on a tape measure. have markings that measure down to 1/16 of an inch. QUARTER INCHES, EIGHTH INCHES, AND SIXTEENTH INCHES In other words, the half-inch mark between inches 13 and 14 is read as 13 ½ inches, and sits exactly midway between the markings for those numbers.ģ. Depending on the tape measure, these may not be designated with a number, which means you’ll need the markings on either side to guide you. Half-inch marks sit between two one-inch marks. You will see a foot designation marked every 12 inches (sometimes in a box as in the picture, or sometimes the number will be shown in red). On a tape measure that uses imperial units – as opposed to the metric system – the most prominent markings are typically the inch marks, designated by long, thin lines and larger numbers. Let’s begin by reviewing the essential parts of an “Imperial” or “English” tape measure: 
Tape measure reading inches how to#
In this blog post, we’re going to look at how to accurately read a tape measure. They’re only effective if the person using them knows how to get an accurate reading.
That’s an old saying, but a true one, and something that applies to tape measures as well. A tool is only as good as the person using it.
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