Oscillation counter; Dumont & Fils Chaux de Fonds, 1910.

Oscillation counter; Dumont & Fils Chaux de Fonds, 1910.
Metal.
Measurements:12 x 10 x 7 cm; 13,5 x 11 x 9,5 cm.
Very rare piece used to measure the frequency. The piece is signed by Dumont, who due to his passion for watches and the difficulty of finding specific tools to repair them founded a workshop to create precision instruments, which has lasted for five generations.
These watchmaker's tools belong to the personal collection of Don Juan José Ontalva (Chinchón, 1930- Madrid, 2019), a famous watchmaker from Madrid, descendant of several family generations dedicated to the world of watches. During his career he achieved a high degree of precision and skill, becoming the master of other watchmakers. He is currently recognised for numerous works, including the commissioning and restoration of the Billeter astronomical clock, located in the Congress of Deputies.