here is something on Scope Chief
Dave Bushnell got into the scope business in 1948, with 400 Japanese binoculars he thought he could sell in the U.S. Alas, many orders were canceled when a shipping strike held up delivery. With his last $200, Dave bought a small ad in Sports Afield—and sold 54 binoculars for $648. It proved to be the boost he needed. His first year as an optics importer brought in almost $150,000. By 1960, more than 18,000 dealers worldwide carried Bushnell products. Three years later he introduced a Scopemaster riflescope line: 2.5X, 4X and 6X models with internal adjustments and coated optics. Renamed ScopeChief, the series improved to emerge as ScopeChief II in 1965. A forward prism enabled the reticle to remain fixed in the second focal plane. A “Command Post” gave you the choice of crosswire or post.