Use only one drop of solution.
- Adjustable lens focus.
- Test Propylene Glycol including Sierra®.
- Test Ethylene Glycol including Dex Cool®.
- Calibration adjustment screw.
- Check state of battery charge.
- Screwdriver, eyedropper,and padded case included.
- Fahrenheit & centigrade scale.
- Weight: 1 Lb.
EZ Red Company EZB108 3 in 1 Refractometer