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Tape Measure Tools & Reading Guides
Interactive visual rulers, practice tests, and fraction breakdown guides for reading standard US imperial tape measures with confidence.
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Reading a Tape Measure (Inches, Fractions and mm)
Reading a tape measure is simple once you know the line heights: the longest line is the full inch, the second longest is 1/2", followed by 1/4", 1/8", and the shortest 1/16" marks.
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Where Is 5/16 on a Tape Measure?
5/16 on a tape measure is located exactly one sixteenth tick past the 1/4" mark (4/16"). In decimal form it equals 0.3125 inches (7.938 mm).
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Where Is 5/8 on a Tape Measure?
The measuring tape 5/8 mark is located exactly one eighth tick past the 1/2" line, halfway between 1/2" and 3/4". It equals 0.625 inches (15.875 mm).