This item is an old weight box (or calibration weights) used with traditional sensitive scales to weigh small items with high precision. Amazon.in Amazon.in +1 Here are the key details about this box: Usage: These sets were historically used in pharmacies (for compounding medications), by gold and jewelry traders, and in scientific laboratories to weigh samples accurately in grams and parts of a gram. Components: The box typically contains a set of metal weights in various sizes, usually starting from 1 gram and going up to 200 or 500 grams.