What device measures the effect of gravity?

Gravity is measured with a gravimeter. Previously, the gravimeter was called the gravity variometer. The gravimeter is more often used in the search for minerals. With its help, it is possible to determine the places of occurrence in the depths of various minerals. As a result, expensive well drilling and mine construction are unnecessary. They are also used in the navigation of nuclear missiles. The gravimeter is a very sensitive device and its robot is often interfered with by many factors, such as temperature, shaking, pressure and vibration.