Maped - Helix Swing Arm Protractor 180 Degree Rotation - Ideal for Students - Classroom Angle Measurement - Precise Angle Measurement - Shatter-Resistant, Dual-Graduated, Transparent Design

This dude the trick. The adjustable arm is great for setting consistent angles.

This protractor is great for my fourth grader. We had bought another one before that wasn’t very clear, but this one was recommended by her tutor because the transparent color design makes it much easier to see the angles during tests. It’s very sturdy and has lasted all year. Great value. Material is sturdy.

I sell my notes because I take thorough ones. And while a protractor isn't strictly necessary for diagrams in calculus, as someone who can't even draw a straight line or a circle that doesn't look like a deflated balloon, having a straight edge and circular edge makes my notes look more professional and attractive. You can also detach the angled arm when you need the inner semi-circle edge. The plastic is of high quality, doesn't shatter or scratch easily, and the best part? I take my notes on a digital notebook (ReMarkable II) and the pen and surface don't bug out when the protractor is used (though that might be more praise for the ReMarkable than the protractor - but the point is that the protractor is digital-surface friendly.) It's great. If you need a nice tight little trig/calculus protractor, this guy will deliver.

This protractor feels sturdy. The angle arm moves smoothly. I can't speak to it's accuracy, but it does the job well enough to get me close to what I need.

This made reading angles for my students way easier. 10/10 recommend.

Good product as described makes measurements much more easy and good price

Grandson starting to study angles. Necessary tool. Love the adjustable arm.

Might be for Left handed use. The measurements are off especially 90 degrees. The 1st picture if how my child was using it and the angles were way off. If i turn and use upside down its better or switch the stick its better ill posted pictures examples of my measurments with how i installed the stick differently. if you use how intended you have to adjust a few degrees to get a 90 degree angle i posted pics examples how much the space difference is but i did have a bigger pencil.

I like everything about it. Makes reading angles easier.

Handy tool to keep in the office.

Très aidant et facilitant pour mon fils!

satisfaite

This is off by 3-4 degrees. Would not recommend if you need precise measurements.