Browse Items (90 total)

Photograph of William P. Lear with a Lear-o-Scope and loop antenna, New York City, New York, circa 1935. Inscription on verso: "Bill Lear and his first direction finder, the Lear-o-Scope. NYC. 1935. Courtesy Lear Archives." Typed caption on verso:…

Report about the Lear Developments automatic landing field orientation device, June 1939. Contains technical details about the device. Three typed pages on Learadio letterhead.

Brochure for the Learadio Model UT-6 radio transmitter, circa 1939.

Brochure for the Learadio Model T30-R3AB aircraft transmitter-receiver, circa 1939.

Pamphlet about Learadio aircraft radio equipment, circa 1930s. Contains technical specifications and images of various models of transmitters, receivers, power supplies, and accessories. 41 pages.

Advertisement poster for Learadio aircraft equipment, circa 1931-1939.

Auto-direction finder with a body made out of gray metal and a white metal face plate. "Lear ADF-12E" is in black on the bottom portion of the face of the object, along with three black dials and a switch. The back has silver metal attachment…

The gyroscope is constructed out of black metal with a glass face for the front dial. There is a black label on bottom portion of the glass with the white text, "Lear Attitude Gyro Model 974R-1." The metal is cylindrical with pieces screwed together.…

Rate Integrating Gyroscope made out of metal and steel. The object is cylindrical with a thick silver steel band around the center circumference. The base of the object is circular silver metal and small copper colored prongs. The main body of the…

Automatic Direct Finder constructed out of gray and silver metal. The object is a rectangular form with two main components screwed together. The top portion has vents on each of the four sides and the bottom portion has circle cutouts on two of the…