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Ballooning - A Cruise in the CloudsThree men ballooning - A Cruise in the Clouds. One man checks an altimeter, another empties sand to lighten the balloon and gain height, and a third releases a pigeon. circa 1900
WW2 poster, Care of instruments is vital. Your Jar is their Jam. Printed for Ministry of Aircraft Production. Date: 1943
Testing a DeviceAn engineer tests a small hydraulic device. Photograph by Heinz Zinram
Measuring the current of a large electronic deviceA man measures the current running through a large electronic device, possibly an early computer or exchange. Photograph by Heinz Zinram
Balloon LightenedA scene in the basket of a balloon. One man consults the altimeter : another empties sand to lighten the balloon and gain height, a third releases a carrier-pigeon