Measuring tape
OwnerEdward M. Wallinventor
Life of this patent
Estimating the term…
Abstract
A tape measure for use with roof framing members is disclosed, the tape measure having a true distance scale having true distance indicia indicating feet, inches and fractions of inches, and one or more secondary false distance scales having false distance indicia corresponding to the true distance indicia, where the actual distances between false distance indicia is the true distance between the true distance indicia multiplied by a predetermined pitch factor. The false distance indicia allow direct marking of the proper rafter lengths for common, hip, valley and jack rafters for a given pitch roof after measurement of the run distance using the true distance scale, without need of calculation or of knowledge of the actual rafter length.
Claims7
A measuring tape for use with roof framing members for direct marking of rafter lengths for a particular pitch based on measurement of a particular run distance, said measuring tape comprising a plural number of scales having a common zero point, one of said scales being a true distance scale having true distance indicia, and one or more additional said scales being secondary false distance scales having false distance indicia means for directly marking rafter lengths without need of calculation, said false distance indicia means corresponding to said true distance indicia, where the distances of said false distance indicia means from said zero point on said tape equal the corresponding distances of said true distance indicia multiplied by a predetermined pitch factor based on said particular pitch.
Dependencies are inferred from the claim text.