Review on D.E.Eco Tri-Corner Plastic by John Hamilton

As my tests showed, this kit is perfect for any science classroom. The three-sided design allows students to easily measure and compare angles, and the durable plastic holds up to constant use. The kit includes a protractor, ruler, and compass, giving students everything they need for geometry and trigonometry. The only downside is that the compass is a bit stiff to open and close. Overall, a great value for a solid set of measuring tools.