Measures the
freezing point of automotive coolants in their current concentration as
well as battery charge. Both ethylene glycol and propylene glycol
antifreezes can be measured, on separate scales. Battery charge is
measured on a third scale using just a few drops of battery electrolyte
solution (battery acid). The specific gravity of the battery acid is
displayed together with a reading of RECHARGE, FAIR, or GOOD.
Comes with a hard carrying case and calibration tool.