Allows the watchmaker to arrange the cock and its balance-spring in such a way as not to pollute the oil located on the pivots of the axis during decoctions
Allows the watchmaker to arrange the cock and its balance-spring in such a way as not to pollute the oil located on the pivots of the axis during decoctions
Allows the watchmaker to arrange the cock and its balance-spring in such a way as not to pollute the oil located on the pivots of the axis during decoctions