Description: Features ATC (Automatic Temperature Compensation) for accurate readings A refractometer is easier and more accurate than a hydrometer for measuring antifreeze point and battery specific gravity and glass freeze point and urea concentration Antifreeze: -50?~0? and Battery Specific Gravity:1.1-1.4; glass freeze: -40?~0?, urea: 30-35% Easy to use and bring Don't put it in a place which the humidity is over 85% for a long time Specification: Size: 15.5*4CM Material: Metal Color: Black Package Includes: 1x Refractometer
