Draper 01054 BH-2B Battery Hydrometer

Precision battery hydrometer for testing the solution content in each cell.
Graduations: - 0.005 g/ml; Red: - Ranges from 1.100 - 1.205.
indicating the battery is discharged.
White: - Ranges from 1.205 - 1.260.
indicating that the battery requires attention.
Green: - Ranges from 1.60 - 1.300.
indicating the battery is fully charged.
Calibrating should be carried out at 20 Deg C.
Care must always be taken when removing battery cell caps and when testing.
Manufactured with a glass tube, PVC bulb and spout.