Specifications:
- Classic surveyor's tool - 5 1/2" retracted, 6 1/2" extended
- Originally invented by sir william de wiveleslie abney circa 1870
- Used to measure the grade of unknown geographic slopes
- Reproduction handcrafted by artisan in brass
- Decorative item, not calibrated to be used for exact measurements
| UPC | 092074483025 |
| Model | BR48302 |
| EAN | 0092074483025 |
| Category | Office Product |
| ASIN | B0010B76FA |
