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Hydrometer scale for precious metals test with which we can check the carat and % purity. It does not leave stains or scratches on the gold pieces to be checked, nor does it require the use of acids.
Its internal software specifically designed with hydrostatic operation shows directly and alternately both the carats and the % purity of the gold, as well as the density of the tested metal. With this last result, we can consult in the density table included in the instructions, the density of other noble metals such as silver, platinum, copper or palladium.
You can evaluate any piece of precious metal as long as it does not contain stones, pearls, etc. that can not dismantle. With this system, it is also not possible to test hermetic hollow parts.
This hydrometer can be used as a conventional high-precision scale.