Inventors:
David C. Copeland - Medford NJ
International Classification:
G01C 936
Abstract:
A plumbing apparatus including a circular spirit level attached to a straight edge body adapted to carry a reference point vertically wherein the level is large enough to span a hole in the floor with marking guides on the periphery to fix lines that pass through a central axis of the level with a rod attached to the level extending through the hole to align with a reference point with a template spanning a second hole to define the reference point.