Bismar scale
Pic SY 17

31" long iron beam with graduation from 0 to 40. The beam and the weight show the verification mark of Sweden (Crown). The weight show also the date 1875 + AH.
A saddle with an wooden handle slide along the beam and show the point of balance.... if found. Also the brass part of the saddle is marked with the Crown.

The weight have 24 Crown marks on it !