For all my fellow right brain friends, this is the ruler for you! Simple math is not needed as most useful details like 41″ is also marked as 3′ 5″ right on the tape, and its detailed measurements has 1/32″ markings. This is substantial and has a solid coiling mechanism. Comes with a metal belt clip and wrist strap. But most important, it locks in place, coils back up, and as advertised, it actually goes to 25 feet! Embarassingly, I have had tape measures in the promo industry that considers 23ft and change close enough to be called a 25ft measure. This is definitely RAD approved!