Sight
Naval
A shape of metal placed on a small arm or cannon in order to direct the fire of the same.
Breech Sight. A sight fixed on the breech of a gun. This sight has marked on it various degrees of elevation with the corresponding distances attained by the shot.
Front Sight. A small shape of metal on the upper surface of the gun between the trunnions. It is brought in line with the object, and the score in the breech sight, so that all three form one straight line.
Reinforce Sight. A sight placed at or close to the reinforce of the gun, so called in the old ordnance.