The Esterline-Angus Instrument Company was formed in 1916 in Indianapolis as a partnership between engineer John W. Esterline and mechanical expert D.J. Angus. The company was known for producing a number of products including recording instruments, permanent magnets, and even automobile lighting. The plant, first located in downtown Indianapolis, relocated to Speedway in 1923 through the company's association with James Allison, one of Speedway's founders.

it is currently a big defense contractor, 7 bilion a year company.