straightedge

IPA: strˈeɪtɛdʒ

A flat, rectangular tool used to draw, cut or check the straightness of straight lines.

Alternative form of straight edge [(informal) Living one's life opposing or eschewing the use of substances such as alcohol, tobacco, and drugs.]

Examples of "straightedge" in Sentences

Compass and straightedge construction.
Secondly, it's a straightedge, not a ruler.
A straightedge barrier aligns the material.
That is not possible with an unmarked straightedge.
And watch out for those hardcore straightedge kids.
Professionals use a long straightedge to detect them.
Compass and straightedge constructions as complex arithmetic.
The basic shape is constructible with compass and straightedge.
A regular decagon is constructible with a compass and straightedge.
A regular dodecagon is constructible with compass and straightedge.
A straightedge reference member is positionable alongside the wheel rim.
There is an unavoidable element of inaccuracy in placing the straightedge.
The lines will not be perfectly straight, even if drawn with a "straightedge."
They would be impressed if you could trisect an angle using only a compass and straightedge.
The heptagon seven sides, for example, cannot be constructed with a compass and straightedge.
Other architects did this, but typically relied on careful measurements, a compass and a straightedge to create a precise template for the stonemasons.
Hemmed in by its straightedge boundaries, shining moons and planets of dust would swirl and turn, or glide in, through, and out of the beam's dimensions like miniature ships.