Schiessversuche mit Geschütsrohren aus Bofors-Stahl Portefeuille met een verzameling losse foto's van artillerie / Aktiebolaget Bofors-Gullspång, Bofors Arenco. Survey of Arenco platform in connection with a projected Arenco 40mm computer, target indicator, parallax computer and ring sight for control of the gun Arenco. Modernization of antiaircraft guns with Arenco elecrtonic servo for : 10.5cm, 40mm akan L 60, 40mm akan m/3636 Arenco. Fire control equipment - Demostration in sweden Arenco. Modernization of antiaircraft guns with Arenco elecrtonic servo for : 10.5cm, 40mm akan L 60, 40mm akan m/36
