private void Update()
{
    if (isExamining && Input.touchCount > 0)
    {
        // Get first touch
        Touch touch = Input.GetTouch(0);
        if (touch.phase == TouchPhase.Moved) {
            Vector3 rotation = new Vector3(touch.deltaPosition.x, touch.deltaPosition.y, 0) * _rotSpeed * Time.deltaTime;
            _examinedObject.transform.Rotate(rotation);
        }
    }
}