








📐 Cut like a pro, measure like a boss — never miss the mark again!
The Johnson Level & Tool RAS-1B Johnny Square is a 7-inch aluminum rafter angle square designed for professional carpenters and contractors. Featuring CNC-machined edges for ±0.1 accuracy, integrated protractor scales, and continuous scribing notches, it streamlines layout tasks for rafters, stairs, and trim. Its durable powder-coated finish minimizes glare, while the thick edge doubles as a saw guide. Backed by a limited lifetime warranty, this tool is a reliable staple for precision woodworking and construction.

















| ASIN | B00002N5O6 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #162,246 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #213 in Carpentry Squares |
| Color | Silver |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,115) |
| Date First Available | February 17, 2007 |
| Is Discontinued By Manufacturer | Yes |
| Item Package Quantity | 1 |
| Item Weight | 7.8 ounces |
| Item model number | RAS-1B |
| Manufacturer | Johnson Level & Tool |
| Material | Aluminum |
| Measurement Accuracy | +/- .1 |
| Measurement System | Metric |
| National Stock Number | 5210-01-336-5737 |
| Part Number | RAS-1B |
| Power Source | Hand Powered |
| Product Dimensions | 0.81 x 10.25 x 7.5 inches |
| Size | 7" |
| Style | 7'' Aluminum Rafter Angle Square |
| Thickness | .1 Inches |
| Warranty Description | Limited Lifetime Warranty: Johnson level warrants this product against defects in material and workmanship of mechanical parts for life and electronics for one year. The company will replace or repair the product if it fails under normal use. This warranty is limited to the repair or replacement of the product only. |
A**N
A must for any framer
I've gone through several speed squares over the years trying many different brands and styles. These Johnsons seem to be the best quality for the lowest price and one of the only styles that actually has scribing notches over 5.5".
M**E
Love the notches for marking rip cuts
Love the notches for marking rip cuts, that was the main reason for my purchase. Don't know why all brands don't have this useful feature. Tool is well made, arrived with a couple of small areas where the paint/coating was chipped, but it's gonna get scratched up in use anyway so not a big deal.
R**L
Hand tool
Well made and with strong material. Good accuracy.
P**.
A very "intelligent" tool.
There is a great deal to know about the use of a speed-square beyond simply using it as a square. The manual is very helpful in learning the many tricks these little guys will perform. However mine arrived without a manual so I have to call and ask for one or I have to look up the functions on the web. The missing manual is the only reason for a 4-star rating. I use a spring-loaded clamp to clamp a larger 12", speed-square to my radial-arm saw table and use it as a fence for ripping short pieces. That approach is faster than the two or three minutes it takes to set the radial-arm saw up for ripping along the built-in fence. This setup does offer the "option" of trimming your fingernails at the same time - NOT RECOMMENDED! I use a 12" or 15" piece of scrap and form a "bridge". One end rests on the peace I'm ripping and close the travel of the blade. The other end rests on a piece of scrap that is a little thicker than the workpiece. With my left hand I apply pressure on the bridge to hold the work peace in place and with my right hand I draw the saw through to blah make a nice square cut. NOTE; if you get careless your carbide saw-blade will happily cut pieces off your speed-square. I know it will . . .
D**N
Squared Up
This is a basic speed square that is perfect for marking cutlines on lumber. It even has the option to accurately mark angles. It seems so simple, but I know it can do quite a few things that I'll never find out about lol. Feels like it will last a long time and got it at a great price.
J**Í
Functional, Long Lasting
I used to have the black “laser engraved” version of this square but after a year or so of use the square was fading and the measurements were hard to read. This one isn’t as cool looking but with actual engraved markings will be lasting mich longer. Love the scribe notches as well and it has a bottle opener built in.
T**A
Durable and great value!
Great square! The extra scribe notches are very useful for marking rip cuts. The imprinted markings and numbers ensure that the square never becomes unreadable. I prefer this square over the other Johnson Johnny square that is matte black with laser etchings. The finish and etchings eventually become so scratched that they are unreadable.
C**J
Same product as our local store, but much cheaper and works great!
Works great for the project we needed it for, and much cheaper than in our local stores. My husband wishes we'd gone with a bigger one, but I think it's great to have both (and I did end up using it more than he did). The one we received was straight, though we are by far no carpenters. Our projects included: a laundry dresser (shelf for baskets) and a spice rack. I'll update this as we use it for our future projects!
J**P
Great product
L**I
La squadra si presenta bene, robusta e ben rifinita, le misure sembrano attendibili anche se le tacche sono un po troppo spesse per i miei gusti, ma calcolando che viene utilizzata spesso su materiali grezzi e quindi pennarelli o matite con punte spesse forse è giusto così. Il rapporto qualità prezzo è ottimo.
P**L
This is best square I ever had, very sturdy
L**S
It's NOT a square...it's a triangle...but a REALLY GOOD ONE! I am not disappointed. :) If you went down the same rabbit hole I did to choose a square?... yeah.. this one needs to be in your shop/tool-belt!
G**.
Artikel wie beschrieben. Zahlen und so sind rein gefräst, also immer leserlich. Gut es sind Amerikanische angaben (Inch), aber für Winkel und zum Anzeichnen von Brettern ist er super. Gut ich könnte jetzt rummosern weil er nicht genau 90° ist, sondern bei der Winkelüberlage (damit prüft man die 90° von Winkel) ist eine Differenz von 0,5°. Aber der Johnson Level Rafter Angle ist ja regulär für Treppenbau und Dachbau, ist ja bei der Beschreibung dabei. Da sieht man wie er eingesetzt werden kann und hinten in der Beschreibung sind noch irgendwelche Tabellen. Für meine Zwecke reicht er.
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