In planing edges test lengthways with the eye and straight-edge of some sort, and crossways by applying the try-square (Fig. 640).
To do this, lay them on a flat surface with the ends square and mark them with a try-square.
The Bevel is in reality a try-square which can be adjusted to any desired angle.
Test all surfaces of the posts with a try-square to see that they are square with each other.
try-square, a very valuable tool for setting right angles, provided the teacher and pupils know how to use it.
The try-square or any straight edge may be used for the same purpose, Fig. 105.
The advantage of this arrangement is that it is easy to test one's work with the try-square by lifting it up to the light.
Across these lines score accurately with a try-square and knife.
The miter-square, Fig. 201, is a try-square fixed at an angle of 45°.
Then plane that edge down to the line so made, using the try-square to keep the edge at right angles with the straightened side.