This stainless steel ruler is a must-have for any architect, engineer, or student who has to work with precise measurements! The ruler is stainless steel with a matte finish, which makes it easier to see measurement markings because the surface won't reflect background light. The "zero" measurement starts at the very edge of the ruler, so you can just hold the edge of the ruler to the edge of what you are measuring. This is convenient for measuring heights and depths, where an extra gap between the "zero" mark and the actual end of the ruler may get in the way. The front of the ruler is marked with millimeters and half millimeters, and the back has an inch-to-millimeter unit conversion chart and other reference figures. It comes in a flexible plastic sleeve with a clear front and blue back. A small hole on the ruler, as well as the sleeve, makes it easy to hang the ruler anywhere for easy access.
It's well-made, very slim and thin, and very precise. I really want to like it
more, but it's also very sharp, almost like a knife, to the point that it
catches the paper even laying flat on top of it if you try to move it. Other
downsides include no inch markings (don't find the conversion table very useful)
and, it's flexible, it bends, which could be a good thing but also makes it feel
less like the sturdy steel tool it really is. The sharp corners means you need
to keep it inside the plastic sleeve for storage, further taking away from the
quality metal feel.
For most uses, I like the Midori Aluminum Multi Ruler more, which does not have
these problems (other than the lack of inch markings) and also gives you many
more tools to boot. However, it's also costs almost three times more and is not
thin enough to be used as a bookmark, so you might still find a place for this
steel ruler. Be aware though that as a bookmark it can be slippery and fall out
of your book if you're not careful.
I suspect this ruler is really meant for woodworking, and then just branded
Kokuyo and marketed as an office supply. I can find identical rulers at 30 cm
with different branding, but including the conversion table and "lanyard" hole,
sold at hardware stores. I think it's much better for this use than as an