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Computer Air Navigation True Airspeed, Mach No., Wind Solution, Supersonic Type MB-2A
Object type: slide rule
Maker: J. B. Carroll Co.
Place made: United States, Illinois, Chicago
Measurements: 4.25" diameter
Nomenclature: data processing tools and equipment - slide rules
Classification: tools and equipment
Plastic circular slide rule for temperature, knots, air pressure. Sliding scale and cursor on each side. In plastic pouch with instructions. Device used to calculate and translate data from the wind tunnel in the 1940s by women hired by MIT.