ATD-3325 Def/Coolant Battery Refractometer

Features:
3-in-1 tool combines coolant, battery, and DEF scales all in one
Focusing eyepiece for clear readings and comfort of use
No power needed, uses ambient light to verify fluid condition
Automatic temperature compensation
Reads both Ethylene and Propylene Glycol based coolants
Kit Includes:
Fluid dropper
Cleaning cloth
Screwdriver
Blow-molded storage case