Wilhelm Haid founded a workshop making table clock cases in Pfullingen near Reutlingen in 1926. Initially, he supplied clock manufacturers in Schwenningen. Just a few years later, the company began offering complete clocks under its own name. The business specialised in domestic clocks, including wall clocks, table clocks, mantel clocks and buffet clocks. After the Second World War, it continued both case production and the sale of its own clocks. In 1951, its 25th anniversary year, Wilhelm Haid employed almost 100 people. The company predominantly used movements purchased from other manufacturers. Mechanical movements from Franz Hermle & Sohn of Reichenbach am Heuberg are particularly common. The combination of in-house cases and proven clockmaking technology from other producers was characteristic of Haid's output. Around 1982, the company ceased making clock cases and turned to the manufacture of chemical and electronic laboratory equipment. It was still active in this field in 2011.