Measuring Ranges: 0-100 ppt of NaCl and 1.000 to 1.070 Specific Gravity (0-10%)Divisions: 1 ppt / 0.001 Specific GravityAccuracy: ±1 ppt / 0.001 Specific Gravity (±0.10%)Length : 170mmWeight: 240gHeavy duty (Durable Aluminum)