Features: <br>1. Aluminum body, sturdy and light weight. <br>2. Automatic temperature compensation (ATC) function. <br>3. Compact design with anti-slip rubber handle. <br>4. Equipped with a manual calibration knob, you can rotate it to focus the scale clear. <br>5. Soft eyepiece gives you great comfort while viewing. <br>6. No batteries or power supply are required. <br> <br>Specification: <br>Model: RZ115 <br>Measurement Range: <br>Ethylene Glycol: -50℃ ~ 0℃ <br>Propylene Glycol: -50℃ ~ 0℃ <br>Cleaning Fluid: -40℃ ~ 0℃ <br>Battery Fluid: 1.10 - 1.40sg <br>Material: Aluminum & ABS <br>Color: Black + Silver <br>Size: 156*40*40mm / 6.1*1.6*1.6in <br>Weight: Approx. 236g/8.3oz <br> <br>Package list: <br>1 * Antifreeze Refractometer <br>1 * Pipette <br>1 * Mini Screw Driver <br>1 * Wiping Cloth <br> <br>Note: <br>1. Due to the difference between monitors and light effect, the pictures may not reflect the actual color of the item. Please take the real one as standard. <br>2. Please allow slight error due to manual measurement. Thanks for your understanding. <br>3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.<br>1、Aluminum body, sturdy and light weight. <br>2、Automatic temperature compensation (ATC) function. <br>3、Compact design with anti-slip rubber handle. <br>4、Equipped with a manual calibration knob, you can rotate it to focus the scale clear. <br>5、Soft eyepiece gives you great comfort while viewing.