Quick Answer: The Set Square, Blackboard is a 30-60-90° plastic triangle for chalkboard work, with a 60 cm longest side and a detachable handle.
Last updated: October 2026
Key Features
30-60-90° blackboard triangle
Longest side 60 cm
5 mm thick plastic
Graduated in cm on all sides
Detachable handle
Technical Specifications
Specification
Value
Angles
30-60-90°
Longest side
60 cm
Material
Plastic, 5 mm thick
Graduations
cm, on all sides
Handle
Detachable
About This Product
A large set square lets a teacher draw right angles and 30° and 60° angles on the blackboard where the whole class can see them. The centimetre markings on every side also let it work as a ruler for board diagrams. The Set Square, Blackboard can be supplied on export terms to Venezuela, Equatorial Guinea, Sri Lanka, Guinea-Bissau and Brazil.
Frequently Asked Questions
Can the handle be removed from the blackboard set square?
