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๐ Elevate your drafting game with precision that never quits!
The Mr. Pen Architectural Scale Ruler is a 12-inch, triangular aluminum drafting tool designed for architects and contractors. Featuring durable laser-cut imperial scales that wonโt fade or scratch, and color-coded sides for quick scale selection, it combines longevity with professional-grade accuracy. Highly rated by thousands, itโs the essential ruler for precise floor plans, blueprints, and orthographic projections.





| ASIN | B07DNHCMS7 |
| Best Sellers Rank | #10,197 in Office Products ( See Top 100 in Office Products ) #29 in Drafting Tools & Drafting Kits |
| Brand | Mr. Pen |
| Brand Name | Mr. Pen |
| Color | Silver |
| Customer Reviews | 4.7 out of 5 stars 5,148 Reviews |
| Graduation Range | 1/16 inches |
| Item Highlight | Contractor's Scaling Ruler, Drawing & Drafting Tool |
| Manufacturer | Mr. Pen |
| Material | Aluminum |
| Material Type | Aluminum |
| Model | SA01 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | SA01 |
| Style | Triangular Ruler |
| Style Name | Triangular Ruler |
| UPC | 853126008180 |
| Unit Count | 1 Count |
D**F
multiple scales, this is a now brainer to buy
got what i wanted, the multiple scales will save you a lot of time and headache having to go for another ruler that has a needed scale. used in map making, and these are very well made. i can recommend these for the quality to cost the ROI will be worth it
T**S
Reliable, useful, and perfect for the shop!
This ruler is a save for me. I have a small ay home leather shop my patterns amd measurements come from both the U.S. and European pattern makers so thereโs always a combination of Imperial and metric measurements, at least thatโs the two points of this ruler I use. Then thereโs the make of the ruler. Itโs shaped as a triangle. Important for me because I can hold it with too much worry about my fingers being a risk for my sharp blades. My finger grips are up higher than my cutting point so a slip with the blade has less of a risk of turning my finger tips into a painful โencounter.
L**M
sharper image couldn't do better
Having signed up for a scenery painting class, one of these was required to do scaled reproductions. I've never used one before but found the look of this to be high quality. My instinct was right. This heavy, aluminum ruler is easy to read, feels nice in the hand and stands up to a bit of wear. Highly recommended for practical use.
K**S
Works as intended, but corners are sharp
Great Scale(s), as expected. Nice weight, Aluminum, easy to read and use. Four stars only due to the edges (corners) are too sharp and should be slightly rounded.
K**K
sharp
Watch for your packages. This said it was handed to someone and was not. If not at home, would make one think the ordered item was given to someone at a wrong address. Product is just what was needed. Caution if you have kids or animals or elderly, very sharp corners need to be buffed down.
C**R
Scale Ruler
Just got it and tried it. The Aluminum one was better than expected. Well worth it.
T**T
Nice solid tool for the price.
All of my scaled rulers were chipped up and warped, so I thought I'd splurge on an aluminum ruler. This little guy is pretty accurate and the aluminum and will resist chipping unlike the wood or plastic ones I already have. One of the nicer things that I've noticed about this is that the center groove on each side is color coded so I can work visually rather than picking it up and flipping it around for the proper scale. In this case, I work in 3/8" and 3/4" scale a lot, so I am always looking for the blue stripe. Perhaps this is common on newer scale measuring sticks, but it is new to me as an adept amateur, so it is really delightful in a kind of common way. I'm concerned that the printing on the ruler may wear fast, it is fine so far with only a couple months of use, but the marks are printed and stand proud of the surface, not engraved. This is going to fail and wear away at some point, but so far so good.
C**L
Excelente.
Excelente producto, precisos.
J**S
Perfect
Perfectly fine
V**R
Wrong description
It is not of aluminum... It is made of cheap plastic...
M**Y
Great quality
Great quality!
S**N
Cheap
Cheap for a reason, 3 of the ends were bent which interfered with the straightness and coloured lines not stuck properly. Returned.
B**S
Wish I had one years ago
Awesome scale rule, easy to read and love that it is aluminum.
Trustpilot
1 day ago
4 days ago