Involvement:General (knows how to use it) - Ownership:less than 1 day
tried already with set-squares that i know the exact angle and it measures exactly the 30 degrees, the 45 degrees and the 60 degrees, so i believe in the measurements of the Protractor.
the metal has sharp edges and corners.... but it was expected because it is all made in metal.
the measurement mark could me more noticeable. i think the screw is too big. i would prefer for it to have another type of way to connect the two parts of metal. i hope i do not loose the screw.
great for solid angle measurements
a bit expensive, but it as a great usefulness. i am a math teacher and this helps to student see the angles is a cube, octahedron, icosahedron and other solids
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