Description

In black cardboard box marked in green "Lawrence Deluxe Slide Rule made in USA". Name on rule has been scratched off. Slides: [Angle, Gain, wavelength] diameter. Stamped on front: "Radiation Laboratory // MIT Cambridge Mass." Stamped in faint red ink on back: "AAF AMO WAtson Lab. // Antenna Laboratory // Cambridge Field Station // 230 Albany Street // Cambridge Mass".