Removes the difficulty of flange aligning and squaring
  
Notched at either end for ease in aligning on the centerline of the pipe
  
Includes two 25-pound pull, cast-in magnets for holder in either a flat horizontal or vertical position
  
Base will accept either leg of a standard or combination square
  
Will work on pipe diameters from 1" on up requiring only the extension on the legs of the square being used to accommodate larger diameters