Lightweight and durable to ensure high quality and accurate test results. Equipped with an integrated ATC compensation range (automatic temperature compensation), ranging from 10° to 30° to eliminate temperature differences during use Easy to focus and calibrate, very easy to use, durable.FULLY EQUIPPED with ATC, it automatically adjust itself to correct temperature discrepancies during use. Because refractive index is very temperature dependent, it is important to use a refractometer with automatic temperature compensation (ATC) to give you the most accurate measurement in any type of environment temperature. 

specification:

Measuring range: I/O 0-80%

Minimum division: in / in 1%

Accuracy: ±1%

Size: 159mm*28mm*23mm

Weight: 164g

Set Includes: 
1 x Portable Alcohol Refractometer 0-80% W/ ATC 
1 x Pipette 
1 x Mini Screw Driver 
1 x Soft protective carrying case