641 and 851 Precision Woodworking Squares
Woodpeckers 641 and 851 Squares pack the features of our best-selling 1281 into more "apron- friendly" sizes. You can easily keep either one with you all the time in your shop. Unlike most squares on the market, the 641 and 851 have a one-piece central core which is precisely machined to be within ±.0085° of 90°…or better. On both sides of that central core, we pin precision-machined cheeks flush with the base and 1/4" back from the inside edge. This forms a shoulder that keeps the square registered to your material without you holding it in place. Whether you're setting up machines, laying out joinery or checking parts as they go together, these squares are the ones you want for every step of your project.
Perfect Full-Time Shop Companions
The previously mentioned "±0.0085°" isn't a goal, it's a guarantee…for life. If you ever find your square outside that tolerance, we’ll fix it or replace it. To put that angular tolerance in perspective, on the 641 the far end of the 6" blade would be out by less than half the thickness of a human hair at the maximum allowable variance.
The scales on the 641 and 851 are laser engraved to a tolerance of .004" total accumulated error over the length of the blade. The outside scale is ideal for setting tooling heights. The inside scale gives you a perfect zero reference from the edge of your stock. You have your choice of inch or metric scales.
You can purchase each size separately or save some money when you buy them as a set. Each square comes with a wall-mountable Rack-It to keep your Precision Woodworking Square right in plain sight and always ready to go to work.
Like all Woodpeckers products, the 641 and 851 Precision Woodworking Squares are precisely machined and carefully inspected in our Strongsville, Ohio, facility (just south of Cleveland).
| Country of Manufacture | United States |
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