The company was known for producing threshing machines, regarded as among the best available.

They also made traction engines, steam tractors such as the Foster Wellington and Showman's road locomotives.

Foster were briefly involved in a deal to market tractors built by Daimler in Britain but this was dropped after the war. (
Little is known about the Daimler tractors which mainly were exported).
The company was known for producing threshing machines, regarded as among the best available. 
They also made traction engines, steam tractors such as the Foster Wellington and Showman's road locomotives.
Foster were briefly involved in a deal to market tractors built by Daimler in Britain but this was dropped after the war. (Little is known about the Daimler tractors which mainly were exported).
William Foster & Co.