Measuring Range: 0-28% Brix Accuracy: ±0.2% Brix: 0.2% Brix Accuracy: ±0.2% ATCCompensationRange: 10°C~30°C (50°F~86°F) Reference Temperature: 20°C Length: 170mm Weight: 250g Durable and built to last long Uses ambient light only which means battery or power source is not required Heavy-duty and lightweight with its aluminum construction Easy to focus and calibrate Accurate testing results guaranteed Made with the highest and finest quality of aluminum & rubber that makes it lightweight Cushioned with soft & comfortable non-slip rubber Extremely easy-to-use and calibrate Equipped with Built-in ATC compensation Range (Automatic Temperature Compensation) from 10° to 30° to correct temperature discrepancies during use