Watch sensitivity check method
1) will not be wound has stopped walking watch gently shake, with the power of shaking to observe the second hand walking: if the second hand in a very short period of time to stop walking, the watch can be fully wound after all (i.e. no torque spring), high sensitivity; If the second hand continues to move for a long time, it shows that the watch can not all go after the spring (that is, the spring also stores torque), sensitivity is not high or table machine failure.
2) will not be wound to stop walking watch, slowly turn the head, observe the second hand starting: the lower the rotation of the upper hand, the earlier the second hand start that the sensitivity of the table is higher; Otherwise, the sensitivity is low or the table machine has other faults. But pay attention to the fast pendulum watch due to the larger gossamer stiffness, than the traditional frequency (18000 times/hour) table machine to a little more spring to swing. High sensitivity of the watch, on a spring after the continuation of a longer time.
