Patent ID: 7374125

Claim:
A tape measure comprising: a) a mounted wheel having an opening with a serrated portion located on an interior of the opening; b) a pivot portion having: i) a driving bar located on a top thereof; ii) a plurality of posts located on a bottom thereof; and iii) an axis located on the bottom thereof; c) a plurality of rotation members, one of the plurality of rotation members is rotatably mounted on each of the plurality of posts; each of the plurality of rotation members has a first gear and a second gear located on a bottom of the first gear; and d) a transmission wheel having an operation gear rotatably mounted on the axis of the pivot portion, wherein the serrated portion located in the opening of the mounted wheel engaging the first gear of each of the plurality of rotation members, and the second gear of each of the plurality of rotation members engaging the operation gear of the transmission wheel.