AZIMUTH MEASUREMENT DEVICE

An azimuth measurement device is provided that includes a first angular velocity sensor, a rotation mechanism, and a second angular velocity sensor. The first angular velocity sensor has a first detection axis extending in a horizontal direction and is configured to detect a first angular velocity around the first detection axis serving as a rotation center. The rotation mechanism has a rotation axis extending in a vertical direction and is configured to rotate the first detection axis of the first angular velocity sensor around the rotation axis serving as a rotation center. The second angular velocity sensor corrects a rotation angle of the first detection axis in the rotation mechanism. The second angular velocity sensor has a second detection axis extending in the vertical direction and is configured to detect a second angular velocity around the second detection axis serving as a rotation center.