Q: What is the Marshall patent square used for?
It's a practical layout tool for checking square, transferring angles and taking depth measurements, with the rule adjustable for both projection and angle.
15N1250 – Lee Valley Replica Marshall Patent Square
Reproduced from a design patented by Joseph Marshall in 1877, this compact, versatile tool elegantly combines the functions of a square, bevel, depth gauge and center finder.
The 6" stainless-steel rule slides and pivots in the head, allowing it to be adjusted for both projection and angle. A brass thumbscrew locks the rule at the chosen length and at any angle from 22.5° to 90°, so it can be used for checking square, transferring angles or taking depth measurements.
The 3 3/4" wide base is machined flat for stable registration against a workpiece, and the two 45° arms form a 90° cradle for locating the center of round stock. The rule is graduated in 32nds along one edge, 64ths along the other and in millimeters on the opposite face, with crisply engraved markings that are black-filled for legibility.
Reflecting the tool’s Victorian-era origin, the decorative webbing between the arms has a matte black japanned finish.
More than just an irresistible design, it is a practical layout tool that’s a real pleasure to use.
Made in Canada.
It's a practical layout tool for checking square, transferring angles and taking depth measurements, with the rule adjustable for both projection and angle.
Joseph Marshall patented the design in 1877.
The rule is 6" long, with one face graduated in Imperial and the opposite face in millimeters.
| Materials | Stainless-steel rule; brass thumbscrew |
| Dimensions | 6" rule; 3 3/4" wide base; 22.5° to 90° rule angle range |
| Graduations | 32nds; 64ths; millimeters |
| Includes | Patent square |
| Color/Finish | Matte black japanned webbing |
| Package Quantity | 1 item |
| Country of Origin | Canada |
| Warranty | Lee Valley Satisfaction Guarantee |
WARNING: This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause Cancer. For more information, go to www.P65Warnings.ca.gov (opens in new tab).
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Lee Valley Replica Marshall Patent Square
Reproduced from a design patented by Joseph Marshall in 1877, this compact, versatile tool elegantly combines the functions of a square, bevel, depth gauge and center finder.
The 6" stainless-steel rule slides and pivots in the head, allowing it to be adjusted for both projection and angle. A brass thumbscrew locks the rule at the chosen length and at any angle from 22.5° to 90°, so it can be used for checking square, transferring angles or taking depth measurements.
The 3 3/4" wide base is machined flat for stable registration against a workpiece, and the two 45° arms form a 90° cradle for locating the center of round stock. The rule is graduated in 32nds along one edge, 64ths along the other and in millimeters on the opposite face, with crisply engraved markings that are black-filled for legibility.
Reflecting the tool’s Victorian-era origin, the decorative webbing between the arms has a matte black japanned finish.
More than just an irresistible design, it is a practical layout tool that’s a real pleasure to use.
Made in Canada.
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