High Accuracy Visual Technology: Features a full resolution visual crystal with 1.5 x upgraded light transmission for clear scale readability and a metal calibration screw structure for easy aught with distilled water Wide Applicatparticlemail: Four thousand auto repair shops, 4S service centers, fleet maintenance Automatic Temperature Compensatparticlemail: Hard wearing advanced temperature compensation structure to secure stable and accurate readings Quadruple Professional Measurement: Accurately procedures urea concentration ( 30% 35%), coolant freezing point ( 50 0℃), windshield washer fluid freezing point ( 40 0℃), and battery electrolytic specific weight ( 1.10 1.40sg) for comprehensive automobile fluid analysis Permanent and Ergonomic Planumberebog: Constructed with alloy search engine coating and a gold ratio cutting process for strong durability, Manufacturer: Ywmsfl