Some tape measure blades seem pretty wimpy. How strong should the blade of a tape measure be?
Holding the tape blade in a vertical position, you should be able to walk (push) a 1-inch blade up a wall about 12 feet before the blade twists and bends; a 3/4-inch blade can be walked about 9 feet. In a horizontal position, a 1-inch blade pulled out at an upward angle of 15 degrees should extend about 7 to 8 feet before it bends; a 3/4-inch blade will extend about 5 feet before it bends. These measurements apply to a blade with a quality design. A thin blade will twist and/or bend at least 1 foot or more sooner than the measurements given above. Keep in mind that the width of the blade as well as its length will increase the overall size of the tape measure’s case, and the size of the case will determine how comfortable the tape measure will be to use and carry.
