Patent attributes
One or more specific embodiments disclosed herein includes an apparatus for manually measuring the distance between a first and second point, comprising: a first and second member that is positioned adjacent to the first member, wherein the first member is capable of sliding with respect to the second member in an axial direction and wherein each of the first and second members is substantially straight and has at least two outer longitudinal sides that are substantially straight and substantially parallel to one another, a first replacement tip receiver at a first location between the two outer longitudinal sides of the first member, wherein a first tip can be removably coupled to the first member, and wherein the first tip includes a first tip point capable of corresponding to the first point of the distance to be measured, and a first scale that provides a first distance measurement.