Good product. Works as described. I tested the specific gravity of water and the pointer indicated water in the scale so I assume this hydrometer is well calibrated. The material is very sturdy.Nice feel for the rubber bulb and it draws just the right amount of electrolyte from your battery cell to conduct an accurate test. Made in the USA with a lifetime warranty! You can not wrong buying this hydrometer
Rating:
[5 of 5 Stars!]