




📐 Elevate your drafts with precision that professionals swear by!
The STAEDTLER Professional Triangular Scale Ruler is a 12-inch aluminum drafting tool featuring six imperial scales with high-contrast etched markings. Designed for architects and engineers, it combines durability, lightweight construction, and crystal-clear readability to ensure precise measurements on blueprints and technical drawings. Its weather-resistant, fade-proof design makes it a dependable choice for both office and on-site use.



























| ASIN | B004CO9OKW |
| Best Sellers Rank | #57,043 in Office Products ( See Top 100 in Office Products ) #200 in Drafting Tools & Drafting Kits |
| Brand | STAEDTLER |
| Color | Blue |
| Customer Reviews | 4.6 4.6 out of 5 stars (180) |
| Date First Available | July 22, 2011 |
| Display Type | analog |
| Form Factor | Handheld |
| Global Trade Identification Number | 00031901943530 |
| Item Weight | 0.01 ounces |
| Item model number | 987M1831BK |
| Manufacturer | Staedtler Inc. |
| Manufacturer Part Number | 987M1831BK |
| Material | Aluminum, Metal |
| Material Type | Aluminum, Metal |
| Number of Items | 1 |
| Product Dimensions | 2 x 0.7 x 0.2 inches |
| Readout Accuracy | 0.1g or 0.01oz |
| Size | 1 - Pack |
| Special Feature | Lightweight |
| UPC | 031901943530 |
| Unit Count | 1.0 Count |
A**Y
Love it
The old style metal tri ruler, love it, build quality is top notch, its solid like you remember them being, numbers are easy to read... this is the one.
A**R
All I use is the quarter inch scale
All I use is the quarter inch scale. Works great for my purposes.
E**Y
Ruler
Perfect, just what my son needed for school
T**R
Great quality
Corners were slightly sharp. I appreciate that there was some effort to make sure that they weren’t extremely pointed ends. However I did have to sand them down to make them more comfortable for my personal preference. Other than that it is a very quality scale and seems very durable. I would definitely recommend.
G**M
Love it!
I've always got a scale in my desk even though most of my measuring is done with a roll-o-meter these days. Sometimes, you just need to be exact, and occasionally there is still the need to do some manual drafting. I love the "heft" of this product, it just feels good in my hand. And when I'm drafting I don't have to work about small nicks on the edge like I'd get with a plastic scale. Let's face it, if you're buying a scale, you know you're still going to be using the same one 10 years from now. Spend a little more money and get a product that you'll *love* owning!
H**U
Perfect for architecture
The measurements are very accurate. This is the only choice for architects
D**7
Well made
I'm really pleased with the quality.
C**R
The Best
I carry this in the jobsite while reading scaled drawings. The aluminum body makes it perfect for use in this context because it can take a lot more scratches, beating and bending before breaking. I've tried using cheaper plastic scales but these always broke or the paint wore out quickly. The added weight also makes is a great paper holder when reading drawings outside.
S**Z
Básica para planos en unidades inglesas
J**S
Its a great sturdy ruler that has every scale that you need on the fly. It has some weight on it but not that much, just enough to have a nice feel to use it.
S**E
Had a plastic one for 25 years and lost it . Bought a metal one and couldn't be happier. Well made , very sturdy and precise. Love the weight of it.
C**E
Quality ruler.
K**Y
Perfect product, I only wish they offered a metal one in metric as well. Strong and will last you the rest of your life.
Trustpilot
1 month ago
3 weeks ago