Starrett Hardened Steel Squares
- The beams and blades are hardened, ground and lapped to ensure parallelism and straightness
- Made of high quality tool steel, with the finest of craftsmanship throughout
- The beam is grooved at the inner corner for clearance of burr or dirt
| Part No. | Length of Blade | Metric Range |
| 20-1-1/2 | 1-1/2" | 1-1/2" |
| 20ZZ-1-1/2 | 1-1/2" | Wood Case Only |
| 20-3 | 3" | 2-3/8" |
| 20ZZ-3 | 3" | Wood Case Only |
| 20-4-1/2 | 4-1/2" | 3-1/2" |
| 20ZZ-4-1/2 | 4-1/2" | Wood Case Only |
| 20-6 | 6" | 4-5/16" |
| 20ZZ-6 | 6" | Wood Case Only |
| 20-12 | 12" | 7" |
| 20ZZ-12 | 12" | Wood Case Only |
| 20-24 | 24" | 12-5/16" |
| 20ZZ-24 | 24" | Wood Case Only |
| 20-36 | 36" | 20" |
| 20ZZ-36 | 36" | Wood Case Only |
- Contact Heavy Maintenance Supply 205-384-5284 for more information
