Handheld Alcohol Refractometer. Features: Dual Scale: Brix Scale and Specific Gravity Scale Full Range 0 to 40% Brix Scale with 0.1% Scale Division Sturdy Metal Body, Made of Durable Aluminum Require Ambient Light Source Only Compact Design with Rubberized Grip Handle Adjustable for Focus Heavy-duty & Lightweight Clear Display of Scales Soft and Flexible Eyepiece, Superior Comfort While Viewing Simple & Easy Manual Calibration Instant and Reliable Measurements of Aqueous Solutions ATC Compensation Range (i.e. Built-in Automatic Temperature Compensation System) from 10 Degree to 30 Degree SPECIFICATIONS Measurement Accuracy: 1% Usage: Sugar Weight: Normal Min. Div.: 1% Brix Min. Div.: 1% Measurement Range: Brix 0-40% Alcohol 0-25% Size: Normal Brix Range: Brix 0-40% Brix: 0~40% Alcohol: 0~25% Wort Specific Gravity: ±1% Brix:1 % Brix Wort Specific Gravity: 0.1 Automatic Temperature Compensation (ATC): 10°C~30°C (50°F~86°F) Package Included: 1)1 X Refractometer 2) 1 X Pipette 3)1x Instruction Manual 4)1x Mini Screw Driver 5)1x Cleaning Cloth 6)1x Box . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.