Nice quality, good value square that comes in two parts and requires assembly. When assembling there is very slight play between the ruler part and the edge guide part so I recommend you have another square edge to align against when tightening the screws. I measured against my Woodpeckers stainless steel square and was able to get this square exactly the same. Also note that the pencil holes in this ruler can take up to 1mm thick pencil lead whereas my Woodpecker takes 0.5mm. So take care with this ruler when drawing lines using leads thinner than 1mm since your line may be very slightly inaccurate depending on where you position the lead in the hole.

Good quality, however not perfect as a precision instrument which is a one star let down. Still pretty close and workable knowing its issues. Lucky it is more for ruling off, rather then being square, as seen from photos, slight variant off square, and although photos blurry you can see that it is also 0.5mm off in the ruled lines, so maybe I was just unlucky to get one that is not perfectly square.

Note: The red anodising is actually much brighter than my photos and really pretty finish.