Geometrical Instruments for School Maths Lab

Quick Answer: Geometrical Instruments for School Maths Lab are drawing tools such as a ruler, compass, protractor and set squares, used to measure and construct geometric figures accurately. With geometrical instruments, students bisect lines and angles, construct triangles and draw parallel and perpendicular lines.

Tools for Accurate Constructions

Every construction in the school syllabus relies on a small group of instruments. The ruler measures and draws straight lines; the compass draws circles and arcs and transfers equal lengths; the protractor measures and draws angles; set squares give right angles and, in their usual forms, angles of 45°, 30° and 60°; and dividers transfer or compare lengths without drawing. Knowing which instrument to reach for is itself part of the skill.

Constructions show what these tools can do without a protractor. With a compass alone, pupils can draw the perpendicular bisector of a line segment, bisect an angle and construct an angle of 60° by drawing arcs of the same radius from one point and from where the first arc meets the line. Bisecting 60° gives 30°, and bisecting a right angle gives 45°. Set squares slid along a ruler produce parallel lines, a method used in technical drawing.

The title does not say whether this set is a large board set for teacher demonstrations or a set of student instruments, or exactly which pieces are included. The skills described here apply to either, and confirming the contents will show whether it suits the board or the desk.

Specifications

Applications

• Constructing perpendicular bisectors and angle bisectors
• Constructing 60°, 30°, 90° and 45° angles with a compass
• Drawing parallel lines by sliding a set square along a ruler
• Constructing triangles from given sides and angles

Care & Handling

• Keep geometrical instruments in their case so edges and scales are not scratched.
• Check that the compass hinge is firm; a loose compass changes radius while drawing.
• Carry compasses with the point covered or folded in.

Why Choose LabEquip

Maths teachers in middle and secondary classes, where constructions are examined, are the usual buyers. LabEquip lists the set in Mathematics School Lab Products with the Geo Geometry Sticks for hands-on polygon work; tell us your requirements through the contact page.

Frequently Asked Questions

Which instruments are used for school geometry constructions?

The ruler, compass, protractor and set squares are the core tools, with dividers for transferring lengths. Constructions strictly use only a straight edge and compass, while the protractor and set squares are used for measuring and drawing.

How is a 60 degree angle constructed without a protractor?

Draw a line and mark a point on it. With the compass point on that point, draw an arc that cuts the line. Without changing the radius, move the point to where the arc cuts the line and draw a second arc. Joining the first point to where the arcs meet gives 60 degrees.

How are parallel lines drawn with set squares?

Place one edge of a set square along the given line and hold a ruler firmly against another edge. Slide the set square along the ruler to the new position and draw along the same edge. The new line is parallel to the first.

What is the difference between a compass and dividers?

A compass has a point on one leg and a pencil on the other, so it draws arcs and circles. Dividers have points on both legs and are used to measure or transfer a length without drawing.

How do students read a protractor correctly?

Place the centre mark on the vertex of the angle and line up the zero line with one arm. Read the scale that starts from zero on that arm, since protractors have an inner and an outer scale running in opposite directions.

Which instruments are in this set?

The title does not list them, so confirm the pieces and whether they are board-size or student-size when you enquire. That decides whether the set is used for demonstrations or by pupils at their desks.

Last Updated: September 2026