sight blade
мушка
мушка
blade flat; saber flat; sword flat, flat of the blade / sword
blade de-icers / blade heating elements
blade heating elements / blade de-icers
blade tip light / main-rotor blade tip light
front sight (fore / muzzle sight)
sight, to take a (careful) sight
modular integrated display and sight helmet (Modular Integrated Display-And-Sight Helmet)