Description
The Extech RF41 measures the freezing points of propylene/ethylene glycol between -50°C and 0°C. It also measures the specific gravity of battery acid between 1.11 and 1.30 and provides a quick reference for the battery's state of charge. It only requires 2 or 3 drops of solution for fast and accurate readings. Automatic temperature compensation provides repeatable measurements on an easy-to-read scale. The prism and lens come with a simple focus adjustment. Includes carrying case and calibration screwdriver.
Ref. RF41