1. Self locking mechanism allows blade to be extended smoothly.
2. Easy to use thumb button. Push button retrieval.
3. Magnetic tip allows for easier one person measurement.
4. Double sided two color blade with Hi-Viz for better visibility
5. Ergonomically designed case used easily in either hand
6. Improved button structure for impact resistance and superior durability
7. Built-in shock absorber to protect blade and tip