USING A SLIDING T-BEVEL SQUARE - Continued
USING A COMBINATION SQUARE
Using as a center head to find the diameter of a
Slide center head (1) on rule (2) and fasten by
tightening setscrew (3).
Put the center head flush against the cylinder.
Mark with a pencil or marking crayon. Make
sure the square does not move while marking.
Mark the diameter on the cylinder using a pencil
or marking crayon by drawing a straight line
along the inside edge (4). Make sure the square
does not slip while marking.