Products for bench top machinists | LittleMachineShop.com

Double Square, 4" 4R, Starrett

Double Square, 4" 4R, Starrett - Main image
$68.19 $109.99 In stock

The sliding blade is adjustable making it more practical for a wide variety of uses than a common square with fixed blade. The faces of the head are ground square.

Starrett catalog number 13A.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Amelia ★★★★★

The adjustable sliding blade is a game-changer for framing and drywall layout—way more versatile than my old fixed square. The head faces are ground perfectly square, so my corners come out spot on every time. Feels like a tool that will last for years.

Grace U. ★★★★★

I was pleasantly surprised by how smoothly the blade slides and locks into place, which makes setting angles quick and accurate. The head faces feel perfectly flat against my workpiece, giving me confidence in every mark.

Ellie B. ★★★★★

The sliding blade is a game-changer for laying out dovetails and checking inside corners without fiddling with a second tool. The ground faces on the head mate perfectly against the blade with no wobble, so my marks come out dead-on every time.