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The Johnson Level & Tool 405 Stair/Square Gauge Set is a professional-grade, brass-plated tool designed to attach to any standard framing or carpenter square. It features machined solid brass construction with flush-mounted knurled thumbscrews for durable, precise, and repeatable angle measurements—ideal for stair stringers and rafter layouts. Lightweight and compact, this 2-pack set accelerates your workflow while ensuring contractor-level accuracy.




| ASIN | B00002NBKH |
| Best Sellers Rank | #20,598 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Carpentry Squares |
| Brand | Johnson |
| Brand Name | Johnson |
| Color | Gold |
| Customer Reviews | 4.7 out of 5 stars 2,274 Reviews |
| Global Trade Identification Number | 00049448405008 |
| Included Components | Stair/Square Gauge Set – 2/Card |
| Item Dimensions L x W | 0.56"L x 0.56"W |
| Item Type Name | BRS Stair/SQ Gauge Set |
| Item Weight | 1.92 ounces |
| Manufacturer | Johnson Level & Tool |
| Material | Brass |
| Material Type | Brass |
| Model | 405 |
| Part Number | 405 |
| Product Dimensions | 0.56"L x 0.56"W |
| Style | Brass Stair Guage |
| Style Name | Brass Stair Guage |
| UPC | 049448405008 |
| Unit Count | 2.0 Count |
| Warranty Description | 1 Year Warranty: Johnson Level warrants this product against defects in material and workmanship for one year after the confirmed purchase date. At its option, the company will replace or repair the product if it fails under normal use. |
Ó**R
Great price
Perfect quality
E**S
Good product
Work as designed, but not American made and now there are other options on Amazon including a four pack for not much more. I bought one of the tall sets also and these fit on the tall sets included holder if you like those carabiner holders. The tall set: https://www.amazon.com/dp/B0BJXS82TD?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
J**S
Worked perfectly
I coupled these with a POWERTECH framing square. Worked perfectly. Nice product.
V**R
Good time saver
These are great for repeat marking and cutting. Add them to your square and save a bunch of minutes trimming stairs or rafters. Had a set decades ago but got lost
M**E
The old standard
I have owned several stair guages throughout my career. They are always sold in pairs, so I am not sure why they call it a "2-pack" as just one guage would really work on a framing square. But these are made well, and because they are brass, they should work well for several years without any worry. Just don't loose them. They have been the same for at least 20 years. The only thing I would like better, is if the thumb screw was more of a "wing-nut". I like to make sure they are on the square really tight, so I usually tighten them with a pliar or vise grip before a start to do a lot of marking.
L**A
Easy Adjustment, Fits Square Perfectly
As advertised, easy to place on square and adjust as needed for marking stair stringers. Just what I needed!
L**R
Worth the money
The quality, weight, and the accuracy is good. The squareness and readability is awsome.and is worth the money
R**K
Accurate angles
Very handy to have.
J**.
Efectivo
Elegí esta valoración porque es una enorme ayuda en múltiples tareas en el ámbito de la carpintería tales como marcar zancas de escalera, los ángulos de las vigas y largueros en tejados,etc. El producto es fuerte y no hay que andar con el entre algodones, se lo recomendaré a mis compañeros de taller.
C**.
schön und funktional
Die beiden Winkelanschläge sind sehr schön verarbeitet und man kann Winkel bis ca 5mm stärke damit bestücken. Hab mir mal welche aud einer Stahlmutter selbergemacht und damit den Winkel ruiniert. Messing ist wesentlich sanfter.
A**S
Handy accessories!
I needed to replace the stairs on my home and I looked up how it”s done by pros and learned about these items. I calculated optimal “rise” over “run” for the first time and attached these brilliant accessories to my framing square and was able to quickly trace out the number of steps and then cut them out as demonstrated. Highly recommended!
A**Y
Should be in a carpenters pocket all the time.
Elegant and smart solution. Easy to carry along for quick use. Recommended.
I**T
Excelente
Son buenas facilitan mucho el trabajo
Trustpilot
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