A sighting device for a vehicle, the vehicle including a wall delimiting an interior space from an exterior space, the sighting device including: - a support mounted rotating relative to the wall around a first axis, the support defining an interior volume, - an optronic head for indirect observation of a first part of the environment of the space outside the vehicle, the optronic head being mounted rotating on the support around a second axis, the second axis being perpendicular to the first axis, - a direct optical path for observation of a second part of the environment of the space outside the vehicle, the optical path comprising: - a collecting optical unit adapted to collect part of the environment of the space outside the vehicle, the collecting optical unit rotating around the second axis, and - an optical transport system adapted to transport the image collected by the collecting optical unit to at least one predefined location in the interior space, the optical transport system including a plurality of optical components, part of the components being in the interior space and the other part of the components being in the interior volume of the support, - a drive means driving the optronic head and the collecting optical unit so that, when the optronic head performs a rotation by a first given angle around the second axis, the collecting optical unit performs a rotation by a second given angle around the second axis, the ratio between the two angles being between 0.99 and 1.01, preferably equal to 1. - a support mounted rotating relative to the wall around a first axis, the support defining an interior volume, - an optronic head for indirect observation of a first part of the environment of the space outside the vehicle, the optronic head being mounted rotating on the support around a second axis, the second axis being perpendicular to the first axis, - a direct optical path for observation of a second part of the environment of the space outside the vehicle, the optical path comprising: - a collecting optical unit adapted to collect part of the environment of the space outside the vehicle, the collecting optical unit rotating around the second axis, and - an optical transport system adapted to transport the image collected by the collecting optical unit to at least one predefined location in the interior space, the optical transport system including a plurality of optical components, part of the components being in the interior space and the other part of the components being in the interior volume of the support, - a collecting optical unit adapted to collect part of the environment of the space outside the vehicle, the collecting optical unit rotating around the second axis, and - an optical transport system adapted to transport the image collected by the collecting optical unit to at least one predefined location in the interior space, the optical transport system including a plurality of optical components, part of the components being in the interior space and the other part of the components being in the interior volume of the support, - a drive means driving the optronic head and the collecting optical unit so that, when the optronic head performs a rotation by a first given angle around the second axis, the collecting optical unit performs a rotation by a second given angle around the second axis, the ratio between the two angles being between 0.99 and 1.01, preferably equal to 1.