Vintage brass and rosewood scale, China

Chinese scale/stick balance, from the mid-19th century. Made of brass and the stick of a hardwood possibly rosewood. Various year letters have been stamped on the brass, of which the letter B from 1846 is the oldest. And the hat at the end has a Chinese character stamped into it. This may have been made for the Dutch market because the letters Kg are made with nails in the wood. Reference : 310608