Sigma-Tek Instruments & Avionics

  • 1001 Industrial Rd
  • Augusta, KS USA 67010
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Even though Sigma Tek has only been around since 1983, it has a long, rich history.  People such as Captain Lewis A. Yancy, Rear Admiral Richard E. Byrd, Colonel Jimmy Dolittle and Colonel Charles A. Lindbergh have indirectly been a part of Sigma Tek's past through their association with EDO Corporation and Aircraft Radio Corporation, know to us today simply as ARC.

The actual Wichita operations started in June, 1950 by Ray Erwin who had two other employees and was known as Erwin Sales Company.  Mr. Erwin incorporated on September 1, 1951 and on March 1, 1952, Erwin Sales Company, Inc. was reorganized as Garwin Inc.  In the early days, Garwin was primarily engaged in re-building surplus aircraft instruments and accessories for use by the "light aircraft industry".  In 1952, manufacturing capabilities were added to the Garwin operations.

The founder and president, Ray Erwin, passed away in 1961 after a brief illness.

The sixties brought about three ownership changes.  In mid 1963, the majority stock interest of Garwin, Inc. was purchased by Glen H. (Red) Curruth of Dallas, Texas, a business associate and close friend of Ray Erwin.  Garwin-Carruth, Inc. was sold in 1966 to Weston Instruments, Inc., a capital rich Schlumberger company.

During the next three years, an aggressive expansion program in facilities, products and market was undertaken.  Weston's foreign markets were successfully expanded to include both South America and Europe.

In 1969, EDO Corporation of College Point, New York purchased the Wichita Division of the Weston Instrument Company.  That same year EDO acquired the stock of Electronic Equipment Engineering, Inc. (EEE) of Dallas.  EEE designed and produced radio/audio control equipment for long range aircraft.  These acquisitions by EDO completed its entry into the general aviation market ("light aircraft industry"). EEE was moved to Wichita in 1970.

The next decade saw general aviation reach its pinnacle, producing over 18,000 new aircraft in 1978 alone.  But due to soaring product liabili