A handheld refractometer for easy checking of the freezing points of cooling lubricants and windshield cleaning fluids, as well as checking the electrolyte to determine the condition of the battery.

It is an optical measuring device with which you can very easily and quickly measure the concentration of a liquid by measuring its refractive index.

• For checking both ethylene and propylene glycol.
• Open the cover and pour 2-3 drops of liquid onto the prism.
• Point the front of the refractometer toward the light source.
• Adjust the focus using the eyepiece and read the value.
• Easy calibration and adjustment.