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The finest precision-checking squares – not graduated. Squareness accuracy to .0001" (0.0025 mm) every 6" (150 mm)
These hardened steel squares are used when extreme accuracy is required. The beams and blades are hardened, ground, and lapped to insure parallelism and straightness. The beam is grooved at the inner corner for clearance of burr or dirt. Made of high quality tool steel, with the finest of craftsmanship throughout.
Master Precision Squares - No. 20 Series
Range: 1 1/2-36" (40-910mm)
| Catalog No. |
EDP No. |
Description |
List
|
| 20-1 1/2 |
50128 |
1 1/2" (40mm) Blade, 1 1/2" (40mm) Beam |
109.00
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| 916 |
55152 |
Wood Case, 1 1/2" (was 20ZZ-1 1/2 / 55ZZ 1 1/2) |
21.50
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| 20-3 |
50130 |
3" (75mm) Blade, 2 3/8" (60mm) Beam |
117.00
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| 951 |
55153 |
Wood Case, 3" (was 20ZZ-3/55ZZ-3) |
25.00
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| 20-4 1/2 |
50132 |
4 1/2" (115mm) Blade, 3 1/2" (90mm) Beam |
136.00
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| 918 |
55154 |
Steel/Vinyl Case, 4 1/2" (was 20ZZ-4 1/2 / 55ZZ-4 1/2) |
10.50
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| 20-6 |
50134 |
6" (150mm) Blade, (4 5/16" (110mm) Beam |
186.00
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| 20-6 W/SLC |
66899 |
6" (150mm) Blade, (4 5/16" (110mm) Beam w/Standard Letter of Certification |
226.00
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| 919 |
55155 |
Wood Case, 6" (was 20ZZ-6/55ZZ-6) |
29.50
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| 20-12 |
50136 |
12" (300mm) Blade, 7" (180mm) Beam |
363.00
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| 20-12 W/SLC |
66900 |
12" (300mm) Blade, 7" (180mm) Beam w/Standard Letter of Certification |
403.00
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| 20ZZ-12 |
55156 |
12" Wood Case |
55.00
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| 20-24 |
50140 |
24" (600mm) Blade, 12 5/16" (310mm) Beam |
957.00
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| 20ZZ-24 |
55158 |
24" Wood Case |
105.00
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| 20-36 |
50142 |
36" (910mm) Blade, 20" (500mm) Beam |
2109.00
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| 20ZZ-36 |
55159 |
36" Wood Case |
149.00
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J.W. Donchin Co.
 Ph: 773-261-2182 • Fax: 773-261-2867 • Email: sales@jwdonchin.com
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