The Heyer Scope Square For Externally Adjustable Optics

This is a really neat it bit of vintage scope history. As the advert above says, The optic below, a Fecker 1/4″ tube “commando” optic, has a Heyer scope square installed. because of the optics of those times being externally adjustable, the elevation and windage adjustments pressed against the curved body of the tube. Some … Continue reading The Heyer Scope Square For Externally Adjustable Optics