The scientific alcohol hydrometer uses the Tralle and Proof scales. It features 0 to 100% Tralle and 0 to 200% Proof ranges. The approximate length is 12.0079" (305 mm).
The scientific alcohol hydrometer uses the Tralle and Proof scales. It features 0 to 100% Tralle and 0 to 200% Proof ranges. The approximate length is 12.0079" (305 mm).
| Tralle Range | 0 to 100% |
| Proof Range | 0 to 200% |
| Subdivision | 1%/2% |
| Tolerance | ±1%/±2% |
| Approx. Length | 12.0079" (305 mm) |
