Accelerometer

An accelerometer comprising:

• a pendulum device as a single component, the pendulum device including a pendulum and a pendulum supporter connected to the pendulum, and the pendulum device being structured such that the pendulum is swingable around a junction, serving as a fixed fulcrum, where the pendulum is connected to the pendulum supporter;
• a pendulum stand as a single component, the pendulum stand being attached, at two attachment points on the pendulum stand, to the pendulum supporter in a manner not obstructing swinging of the pendulum;
• and
• a base as a single component, the base being attached, at two attachment points on the base, to the pendulum stand, and the base and the pendulum device being arranged opposite each other across the pendulum stand, wherein
• the base has a thermal expansion coefficient larger than a thermal expansion coefficient of the pendulum stand,
• the thermal expansion coefficient of the pendulum stand is larger than a thermal expansion coefficient of the pendulum device, and
• an angle between a direction connecting the two attachment points of the pendulum stand and the pendulum supporter and a direction connecting the two attachment points of the base and the pendulum stand is greater than zero degrees.