An absolutely straight up and down vertical cut at the top end of a rafter where it touches the ridge.
Plumb line
String line that holds the lead weight and which hangs freely and swings to allow gravity to force the cord to hang in an absolute vertical.
Plumb rule
Bubble indicator, in the middle of a board, which centers between two vertical lines when the board is plumb.
Plumb scratch
An additional scratch coat that has been applied to obtain a uniform setting bed on a plumb vertical plane.
Plumber
Tradesman who installs and repairs plumbing systems.
Plumber's friend or helper
The device normally used to unclog toilets, consisting of a long handle with a rubber cup on the end. When the cup is fitted over the drain and pushed toward the drain by pressure exerted on the handle, the air in the cup is compressed and force is exerted on the obstruction in the drain and pushes it through to clear the pipe. This is also referred to as a force cup.
Plumber's putty
Pliable, popular putty used to seal joints between drain pieces and fixture surfaces.
Plumber's strap or tape
Galvanized steel strap with holes along the length, which helps support smaller pipes.
Plumber's wrench
Plumbing
Collective term for the pipes and fixtures, etc. involved with the movement of fluid throughout a building.
