Sper Scientific 300014 Battery Coolant Refractometer sold2026 it's also good at reading

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Sper Scientific 300014 Battery Coolant Refractometer sold2026 it's also good at readingSper Scientific 300014 Battery Coolant Refractometer Battery Coolant Refractometer m 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