As its name implies, you use a jointer (figure 8- 1)
to make various mortar joints. There are several
different types of jointerrounded, flat, or
pointeddepending on the shape of the mortar joint
You use the square (figure 8-2, view 1) to measure
right angles and to lay out corners. Squares are
usually made of metal and come in various sizes.
The masons level (figure 8-2, view 2) is used to
establish plumb and level lines. A plumb line is
absolutely vertical. A level line is absolutely hori-
zontal. The level may be constructed of seasoned
hardwood, various metals, or a combination of both.
They are made as lightweight as possible without
sacrificing strength to withstand fairly rough
treatment. Levels may be equipped with single or
double vials. Double-vial levels are preferred since
they can be used either horizontally or vertically.
Figure 8-2.-Square, masons level, and straightedge.