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These squares are very popular with machinists, toolmakers, and patternmakers. The sliding blades are 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, and the 6" (150 mm) size has a level.
The bevel blade is available, featuring an octagon angle 45° at one end and a hexagon angle 60° at the other end, clearly marked.
A drill grinding blade, also available for 6" (150 mm) squares, is beveled to 59° for drill grinding on one end and 41° (the cutting angle of countersinks for machine screws) at the other. Both ends have quick-reading graduations in 64ths, and the graduation is located to measure perpendicularly to the axis of the drill. By reading the graduations, the center point can be easily and accurately located.
The 6" square head used with the drill grinding blade is approximately 3 1/2" (90 mm) long, and the faces approximately 9/16" (14 mm) wide.
Double Squares with hardened blades - No. 13, 13M Series
Range: 4-6" (100-150mm)
Range: 4-6"
| Catalog No. |
EDP No. |
Description |
List
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| 13A |
50109 |
4" with Graduated Blade only |
44.00
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| 13B |
50110 |
4" with Graduated and Bevel Blades |
54.00
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| 13C |
50111 |
6" with Graduated Blade |
56.00
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| 13D |
50114 |
Drill Grinding Blade only (for 6"/150mm Squares) |
44.00
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| 13E |
50112 |
6" with Graduated and Bevel Blades |
67.00
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| 13F |
50113 |
6" complete with 13D |
109.00
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Range: 100-150mm
| Catalog No. |
EDP No. |
Description |
List
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| 13MA |
56278 |
100mm with Graduated Blade |
45.50
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| 13MB |
56279 |
100mm with Graduated and Bevel Blades |
57.00
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| 13MC |
56280 |
150mm with Graduated Blade |
57.00
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| 13ME |
56263 |
150mm with Graduated and Bevel Blades |
72.00
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J.W. Donchin Co.
 Ph: 773-261-2182 • Fax: 773-261-2867 • Email: sales@jwdonchin.com
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