Patent ID: 6442853
Filing Date: 2002-09-03
Classification: E04F,G01C

Abstract:
A door jamb square used to align a door jamb in a door opening, said door jamb square comprising:a vertically oriented spirit level, said vertically oriented spirit level having a first end; a horizontally oriented spirit level, said horizontally oriented spirit level having a first end; means for perpendicularly attaching said first end of said vertically oriented spirit level to said first end of said horizontally oriented spirit level; a first plurality of web plates disposed in said vertically oriented spirit level, said first plurality of web plates being vertically adjustable in said vertically oriented spirit level; a second plurality of web plates disposed in said horizontally oriented spirit level, said second plurality of web plates being horizontally adjustable in said horizontally oriented spirit level; an aperture disposed in each of said first and said second plurality of web plates; a plurality of nailing plates; an opening formed through each said plurality of nailing plates; a plurality of removal bolts; each bolt of said plurality of removable bolts disposed in a respective aperture of said first and said second plurality of web plates and extended through a respective opening through each said plurality of nailing plates; and a wing nut received on each bolt of said plurality of removable bolts for fastening each said plurality of nailing plates to a respective one of said first and said second plurality of web plates.