The Curv-O-MarkĀ® Aligner Base is notched at either end for ease in aligning on the centerline of the pipe
Has two 25-pound pull, cast-in magnets for holder in either a flat horizontal or vertical position
The 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