Arteza Architect Scale Ruler, Imperial, 12-Inch Color-Coded Professional-Grade Aluminum Triangular Drafting Ruler for Architect & Civil Engineer Blueprints

Tal y como se muestra en las fotografías. Es perfecta para lo que necesito. Gracias al vendedor.

Pour ma fille au collège qui cassait tout le temps ces règles eh ben celle ci est juste parfaite

Really nice scale! A must buy for all architects!

I’ve used plastic architect’s scales for decades, but I quite like this aluminum one. (And yes, it's a single tool... you don't get three metal scales for this price.) The weight is comparable to plastic ones, but it has a nicer feel. At first glance, it almost looks light-gray, but that’s because it has a very fine acid-etched-like texture that makes it easier to read in different lighting situations. There are plastic ‘ends’ that presumably protect the corners from damage. Some seem confused about the markings, so here’s a quick explanation. This is not an imperial/metric ruler – it’s all about [imperial] ratios commonly used in engineering and architectural drawing. Remember, this is not a ‘ruler’ or straight-edge – it’s not about making “rules” (lines). It’s a scale. It allows you to draw and read drawings at different commonly-used scales without constantly doing math. For instance, if you have a floor plan of a building, and the drawing is in 1:48, meaning that the drawing is 1/48th the true size of the thing it describes, then 1/4”=1’ (each quarter-inch on the drawing indicates one foot in reality). In other words, one inch on the drawing is four feet (48 inches) in full-size. This scale lets you quickly read distances without having to constantly multiply your measurements by 48 to get the “real world” distances. Once you understand that, the markings are not mysterious. Let’s look at a few of the scales as example. Hold the scale with the RED side facing you (logo and “Architect” upper-left, “Made in Taiwan” upper right). This is what most would consider a ‘normal ruler.’ This is the 1:1 scale (one inch = one inch). The “16” printed far left in this particular case means that every vertical marking on that edge is 1/16th of an inch. This edge is different from all the others because of the way it is named and because it shows only a single scale – ‘real world.’ Still looking at the red side, flip it (logo lower-right). The “3/32” at left means that 3/32” on the drawing equals one foot in reality. This is 1:125 scale. You read this from left-to-right starting at the “0” (NOT starting from the left-most vertical lines which are handy finer divisions of the scale for smaller distances). Now at far-right, you see “3/16” … this is ~1:75 scale (3/16” on the drawing = one foot in reality). This is the tricky part. Any scales that have their names printed on the *right* side must be read from right-to-left, always starting at the zero (which again may not be the first marking at the extremes). If you understand the three scales on that one side, you understand the rest of the tool. It’s three sided, giving you six functional edges, and all but one edge displays two interlaced scales, one read from the left and one from the right. That’s eleven commonly-used imperial scales in a single tool. (The description here says “6 scales” but that’s a conservative count due to paired scales being related by simple 1:2 ratios… 1 & 1/2, 1/8 & 1/4, 3/16 & 3/32, etc.) I’ll pass along the advice of several professors of mine: “NEVER use your measuring tools as straight edges for drawing or cutting!” Used and treated properly, this scale should last a lifetime. Hope this helps!

This is a ruler that will last and not lose its accuracy because of repeated use, unlike plastic equivalents. I really like this ruler and it fits my needs.