CHRONOMETER

PROBLEM TO BE SOLVED: To solve the problem that, when a hole is bored in a circuit board to cause a thick part formed in a base plate to penetrate for the purpose of releasing a load at the time of nailing transmitted to the base plate, the hole cuts off a wiring pattern to restrict the arrangement of a circuit constituent element.SOLUTION: A chronometer has a base plate 1, a circuit board 2b, a wheel 3 to which a pointer 6 is fitted, a shaft hole 1a that is bored in the base plate 1 and into which a pointer shaft 3a is inserted, and a circuit component 2a disposed on the extension of the pointer shaft 3a in the axial direction and mounted on the circuit board 2b. On the base plate 1, a first plurality of convexes 1c in contact with the circuit board 2b are formed around the circuit component 2a and in a position enclosing the circuit component 2a, and a load bearing member 4 on which a second plurality of convexes 4a are formed in a position opposing the first plurality of convexes 1c and in a position in contact with a second face on the reverse side of a first face of the circuit board 2b is provided.