Designed for all people working with precious metals calculator. The Jewellers Calculator automatically calculates the gold and silver alloys used for jewelry. Counting with 3 levels of purity of gold and 2 silver . The weights are expressed in grams .

Characteristics:

- Automatic calculation of precious metal and league Gold 18K 14K and 10 K tone Yellow White Pink and Red.

- Automatic calculation of precious metal and Silver league to .950 and .925 law