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The Japanese used devices such as this one to make scientific measurements during balloon ascensions. The clear plastic protective box housing the electronic and mechanical equipment allowed for the rays of the sun to heat the interior of the device (like a greenhouse) which included a small battery. These types of devices were mounted on the top exterior of Japanese balloons and integrated into the working elements of the balloon's payload.

 Display Status

This object is on display in World War II Aviation at the Steven F. Udvar-Hazy Center in Chantilly, VA.

World War II Aviation
Object Details
Country of Origin Japan Type AVIONICS Manufacturer Kubota Wireless Electric Equipment Manufacturing Factory
 Physical Description Small rectangular yellowing plastic container with labels in Japanese on the exterior and interior as well a large variety of electronic and electrical components closely contained within its structure. Dimensions Overall: 3 3/4in. x 2 1/2in. x 2in., 0.4lb. (9.53 x 6.35 x 5.08cm, 0.2kg)
 Materials Plastic, metal, glass, phenolic, fabric, paper
 Inventory Number A20070073000 Credit Line Gift of Harold B. Kaufman, Jr. Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
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