Set Square, Blackboard, 45-45-90 degrees Manufacturer,Supplier and Exporter in India

Set Square, Blackboard, 45-45-90 degrees (Product Code: SLE/CS/08) is a board-size set square used to draw right angles, 45-degree lines and parallel or perpendicular lines on the classroom blackboard in maths and technical drawing lessons. Teachers use it as the large counterpart to the small set square in student geometry sets and mathematics lab kits in India, so the whole class can follow each construction. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.

Key Details

What Is the 45-45-90 Blackboard Set Square Used For?

The teacher holds the set square flat against the board and runs chalk along its edges to draw a clean right angle or a line at 45 degrees to a base line. Placed against a long board ruler and slid along it, the set square produces parallel lines; turned on its other edge, it gives perpendiculars for constructing squares, rectangles and the altitudes of triangles. Because both short sides are equal, it is also a simple way to show the properties of an isosceles right triangle before pupils repeat the construction in their exercise books.

Wipe off chalk dust with a dry cloth after each lesson, keep the edges free of nicks so lines stay straight, and store the set square flat or hanging on a hook next to the board.

What to Specify When Ordering

• Which angle set you need: this 45-45-90 version, the 30-60-90 blackboard set square, or both
• The number of classrooms to be equipped
• The size, material and graduations you require, which we confirm in the quotation
• Matching board instruments, such as a blackboard ruler, protractor or compass

OEM Manufacturer

ScienceLab is the trading name of Jain Scientific Equipments Private Limited (CIN U29309HR2020PTC087597), the OEM (original equipment manufacturer) of this blackboard set square. It is produced at the company's own licensed factory at 449, HSIIDC Industrial Area, Saha, Ambala, Haryana (Factory Licence AMB-ONLINE-CHD-J-414), and supplied factory-direct to schools, education departments, dealers and importers. Repeat orders and replacement pieces are handled by the manufacturer itself, so just ask us. Read more on the company profile.

Related Classroom Student Products

Other board instruments and student tools used in the same geometry lessons:

• Set Square, Blackboard, 30-60-90 degrees — the companion set square for 30- and 60-degree lines
• Ruler, Plastic, Blackboard, 100cm — a straight edge to slide the set square along for parallel lines
• Protractor, Plastic, for Blackboard, 44cm — for measuring and marking other angles on the board
• Compass, Plastic, for Blackboard, 45cm — completes the set for circle and arc constructions
• Student’s Geometry Set/BOX-20 — the pupils’ set, which includes a small 45-45-90 set square

More items are listed in the Classroom Student category.

Frequently Asked Questions

What angles does this set square have?
The Set Square, Blackboard, 45-45-90 degrees has one right angle and two 45-degree angles, so its two shorter sides are equal in length, making it a right-angled isosceles triangle for board constructions.

What are its size, material and markings?
The size, material and graduations of the 45-45-90 blackboard set square are not listed on this page. Please state what you need when you enquire through our contact page, and we will confirm them in the quotation.

How is it different from the 30-60-90 version?
The 45-45-90 blackboard set square gives right angles and 45-degree lines, while the 30-60-90 blackboard set square gives 30- and 60-degree lines. Most classrooms use the two set squares together for complete constructions.

Can it be used on a whiteboard?
Yes. The 45-45-90 blackboard set square works on any flat teaching board; use chalk on a blackboard or a marker on a whiteboard, and keep the drawing edges clean so the lines stay sharp.

Who manufactures the Set Square, Blackboard, 45-45-90 degrees?
Jain Scientific Equipments Private Limited (ScienceLab) is the OEM that manufactures the Set Square, Blackboard, 45-45-90 degrees at its own factory in Saha, Ambala, Haryana, India, supplying schools, dealers and importers in India and international markets directly.

How should it be cleaned and stored?
Wipe the 45-45-90 blackboard set square with a dry or slightly damp cloth after each lesson and store it flat or hanging on a hook beside the board, so the edges are not nicked and the lines stay straight.

Can you supply sets for many classrooms?
Yes. The 45-45-90 blackboard set square can be quoted for single classrooms or whole schools in India and international markets; include the number of classrooms, any matching board instruments and the delivery location in your request.

Request a Quote

Quotations for the 45-45-90 degree blackboard set square come straight from the manufacturer. Write to us via the contact page or add it to the enquiry cart with other board instruments.

Last updated: 24 September 2026