Removes the difficulty of flange aligning and squaring
Holds square in the needed position without tying up one's hands
Notched at either end for ease in aligning on the centreline of the pipe and has two 25 lb-pull, cast-in magnets for holding either a flat horizontal or vertical position
Accepts either leg of a standard or combination square and will work on pipe diameters from 1" up, requiring only extension of the legs of the square being used to accommodate larger diameters
