That's commonly known as a "straight edge".
A ruler.
The compass is used to measure angles. The straightedge is used to draw a straight line. The two items together, are used to measure and draw angles and lines in geometric drawings.
a tool used to draw straight lines or measure straight lines miss pawz: a measuring instrument :)
true
A straight edge or a rule are used to construct straight lines. Laser line setter, In some cases a plumb line
A straight edge or a ruler are used to construct straight lines.
A straight-edge
A straight edge perhaps?
The instrument that is used to construct straight lines is called a rule. Often people make the mistake of calling it a ruler, but its a rule.
That's commonly known as a "straight edge".
An instrument to construct straight lines is called a rule. It's often referred to as a ruler, but a ruler is someone who rules a country. A rule is a piece of wood, metal or plastic (usually showing measurements) that you can use to draw/construct straight lines.A straight edgeThe most common one is a ruler
ruler
A ruler.
COMPASS
Compass
Maybe, but a straight edge and a pair of compasses would have probably been used to construct a perpendicular line bisector for a given line segment.