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12 in. Reach
Sized for big rafters, stair stringers, and full-sheet layout work.
Hi-Viz Orange
Easy to spot on a deck or roof stacked with material.
Won’t Mar Finish
Composite glides on siding and trim without leaving scuffs the way aluminum can.
Made in the USA
Made in the USA by Swanson Tool Company since 1925.
The Speedlite® Square is the composite Speed® Square. Same tool Swanson invented in 1925, engineered in high-impact engineering composite for lighter carry, finish-work friendly contact, and jobsite conditions that punish cast-aluminum or steel. Here is why it earns the belt over a generic plastic square:
Engineered High-Impact Composite, not commodity plastic like some other rafter squares.
Speedlite® bodies are high-impact engineering composite spec’d for repeat drop and jobsite abuse. Commodity injection-molded plastic squares are polystyrene or ABS that crack at the pivot after a season on the belt and split at the corner the first time they take a real drop.
Molded-in markings, not printed.
Every gradation, rafter number, and degree mark is molded into the composite body during casting. Discount plastic squares print or emboss markings on the surface, where concrete dust, sweat, sawdust, and saw-shoe drag wear them off inside a summer of use.
Non-marring on finished stock.
Composite glides across trim, casing, and finished siding without the black witness marks a cast-aluminum or steel square leaves behind. The Speed® Square a finish carpenter can set on the client’s oak floor without a drop cloth underneath.
Full five-tool architecture, no simplification.
Speedlite® carries every function of the original Speed® Square, try square, miter square, saw guide, line scriber, and protractor. Discount plastic squares strip one or two of these off to hit a price point, so the tool you carry is not actually the tool you need.
Hi-visibility across the jobsite.
Speedlite® ships in Hi-Viz Orange and Matte Gray, sized for the light on your site. A dropped orange Speedlite® finds itself in a pile of drywall dust or a stack of framing lumber; a black or clear budget plastic square disappears into the mess.
Holds tolerance through summer heat and winter cold.
Engineering composite holds its 90 degree corner through pickup-bed summers and heater-blast winters. Cheap injection plastics soften and creep under that swing until the corner reads off-square, and every cut off it reads off-square with it.
Built on the 1925 Speed® Square standard.
Speedlite® is the same Speed® Square Swanson invented in 1925, engineered in composite for lighter carry and finish work. The tool is descended from the original, not a copy of it.
Log a retailer purchase to your Tool Log for one-click rebuy.
Links marked with open on third-party retailer sites.
SKU T0701
Available at trusted retailers nationwide
Direct pricing coming soon. See retailer availability below.
The Big 12® Speedlite® Square pairs the 12 in. reach of the aluminum Big 12® with lightweight high-impact composite. Same length for big rafters, stair stringers, and full-sheet layouts, without marring siding or finish stock the way aluminum can. Hi-Viz orange spots fast on a deck or material stack. Diamond™ cutout strikes a 3-1/2 in. stud-width seat cut in one motion.
Pick up locally or order online from Amazon, Home Depot, Lowe’s, Walmart, Ace, Menards, or Acme Tools.
Made in the USA
Since 1925
Trusted retailers
Available nationwide
Pro-trusted
32,000+ verified reviews
In stock at retailers
Why pros reach for it
01
Sized for big rafters, stair stringers, and full-sheet layout work.
02
Easy to spot on a deck or roof stacked with material.
03
Composite glides on siding and trim without leaving scuffs the way aluminum can.
04
Made in the USA by Swanson Tool Company since 1925.
A closer look

Easy to spot on a deck, roof, or material stack.

Long enough for big rafters, stair stringers, and full-sheet layouts.

Cut a 3-1/2 in. layout mark straight onto the stud, no tape needed.

Wider scribe notches sized for the bigger layouts a Big 12® handles.
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