How to Add Feet and Inches by Hand (Step by Step)
Add feet and inches by hand in three steps: add each column, carry over 12 inches, then deal with fractions. Includes a worked example.
Tape Mark blog
Guides and how-tos for Tape Mark. See the Tape Mark app page.
How to Read a Tape Measure (with a Fraction Chart)
Learn to read every tick on a tape measure, from whole inches to sixteenths, with a quick fraction-to-decimal chart you can keep handy.