At the sign edge about at one of the 2 cm mark is quite a corpse Delle, hardly visible, but if you over it sweeps with a finger and see if you hold felt it in the right light, also a few subtle quirks at the edge (fresh from the packaging). If you draw While both practically not on, but that may be by no means.
Another major point of criticism is the imprint. It varies with me sometimes extremely in the thickness of the lines, is very cheap and imprecise. Quite bad it is in line perpendicular delta enters at zero (with the many mm marks). This is so thick that thin character lines are hidden under it, if you want to draw a 90 ° angle to it. So I am not partially succeeded to draw an exact right angle!
Overall I give only 2 stars for the product, in particular in relation to the price and the reputation of the brand Faber Castell.
The triangle is sufficient for simple requirements, but not for use for the production of technical drawings. I am particularly annoyed that I had absolute cheap triangles in hand, had the significantly better quality.