D.E.Eco Tri-Corner Plastic Review

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.

Expensive, yes. However, they are really well made and easy to use. Nobody spilled anything - neither me nor my child. Bought for a science experiment but will no doubt find many uses for them.

I use them for bulk propylene glycol and vegetable glycerin. You can improve the design of the filling, since it can spill. They don't take up much space, which is very convenient. The inscriptions are really difficult to read, especially when they contain clear liquid. I have to read the fill line and hold it with my fingernail so it doesn't overflow, but they get the job done.