EZ Red B108 3 in 1 Refractometer.* 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, distilled water, eyedropper, and padded case included.* Fahrenheit & centigrade scale.
