This video shows you how to measure the length of someone's sleeves precisely. For it, you will need a meter, and to keep your arm straight, near your body. Begin measuring from where the arm starts, where the shoulder naturally begins to curve. Measure straight down the arm until you reach the desired length, where you want the sleeve to end. Be careful to stop at the elbow and position the meter exactly where the curve hits its peek, so that you measure will be precise, and not come shorter because you might have missed the elbows curve. Put your thumb where the measure ends to not forget how long it was.
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