Bendix Aviation Friez Instruments Model 594 Hygro Thermograph Air Humidity 12"

Description

Mid to late 20th century Hygro-Thermograph - a device for Recording Relative Humidity and Air Temperature - produced by the Friez Instrument Division of the Bendix Aviation Corporation of Baltimore, MD. Model 594 / Part No. AW-500054-I / Pen No. 500400 / Ink No. 504974-4 / Hair No. 511824-2 / Chart no. 502498 / Ser. No. 81041.

"Bendix Corporation is an American manufacturing and engineering company which, during various times in its existence, made automotive brake shoes and systems, vacuum tubes, aircraft brakes, aeronautical hydraulics and electric power systems, avionics, aircraft and automobile fuel control systems, radios, televisions and computers. Founder and inventor Vincent Bendix filed for a patent for the Bendix drive on May 2, 1914. The drive engages the starter motor with an internal combustion engine and is still used on most automobiles today. Bendix initially began his new corporation in a hotel room in Chicago in 1914 with an agreement with the struggling bicycle brake manufacturing firm, Eclipse Machine Company of Elmira, New York. Bendix was formally founded in 1924 in South Bend, Indiana, United States. At first it manufactured brake systems for cars and trucks, supplying General Motors and other automobile manufacturers. In the 1920s, Bendix owned and controlled many important patents for devices applicable to the auto industry. For example, brakes, carburetors, and starting drives for engines. It acquired Bragg-Kliesrath brakes in the late 1920s. In 1929 Vincent Bendix branched out into aeronautics and restructured the company as "Bendix Aviation" to reflect the new product lines.Bendix Aviation was founded as a holding company for the assets of Delco Aviation Corporation, Eclipse Machine Company, Stromberg Carburetor Company, and other aircraft accessory manufacturers. Bendix supplied aircraft manufacturers with hydraulic systems, for braking and flap activation, and introduced the pressure carburetor. It made a wide variety of electrical and electronic instruments for aircraft. Starting in the 1950s or before, Bendix Pacific designed, tested, and manufactured hydraulic components and systems, primarily for the military. The company was renamed to Bendix Corporation in 1960. During the 1960s the company made ground and airborne telecommunications systems for NASA. Since 2002, Bendix has been a subsidiary of Knorr-Bremse." (Source: Wikipedia)

Condition

Good Overall - Gentle wear commensurate with use/age; tape residue

Dimensions

12" x 5.75" x 8.75" (Width x Depth x Height)