Patent ID: 9709398
Date: 2017-07-18
CPC Classifications: B25H,B43L,G01B,G01C

Claim:
1. A footer square apparatus for measuring a building foundation, the footer square apparatus comprising: a footer square body having a face; a first guide line disposed on the footer square body and having a length that is substantially straight; a second guide line disposed on the footer square body and having a length that is substantially straight, wherein the length of the first guide line is substantially perpendicular to the length of the second guide line; a third guide line disposed on the footer square body and having a length that is substantially straight, wherein the length of the third guide line forms a 45° angle with the first guide line and forms a 45° angle with the second guide line; a corner marking; a leveling device that can detect if the first guide line and second guide line are parallel with a construction surface, the leveling device positioned on the footer square body face, extending through its thickness, and supported about its circumference; and at least one angle marking disposed on the footer square body, wherein the at least one angle marking identifies an angle as measured between a line from the corner marking to the angle marking and at least one of the first guide line, the second guide line, and the third guide line; further comprising: a first string receiving opening disposed through the footer square body and on the first guide line; and a second string receiving opening disposed through the footer square body and on the second guide line.