During the agricultural industrialisation in Germany after the Second World War, the H. Wesseler oHG became a major tractor company in NRW.

In 1879, Bernhard Wesseler from Darup purchased a building with surrounding land in the heath of Kümper near Altenberge.

Wesselers son Heinrich joined the company in 1911 or 1912,[A 1] and started repairing and selling agricultural machines.

Before the Second World War, Wesseler was still a company specialised in smithy tasks rather than a tractor manufacturer, so that a new forge was built in 1939.

The regular tractor production using the frameless block construction method began after the monetary reform in West Germany in 1948.

[citation needed] The economical upswing of Wesseler began with the monetary reform.

The sons of Heinrich Wesseler, Ludger and Paul already worked for the company back then.

An important occurrence was the DLG-show 1949 in Frankfurt, where the first MWM diesel engine was bought.

A Wesseler dealer network was established, the main distribution areas were the regions around Münster in Westfalen and Oldenburg, the Netherlands, Belgium and Luxembourg.

For the Dutch market, Wesseler tractors got an orange painting and the brand name Feldmeister.

In the viniculture regions Eifel and Mosel some one-cylinder narrow gauge models with up to 15 PS were sold, some tractors even made it to Hesse and France.

When Wesseler was at the economical zenith in the second half of the 1950s, one tractor left the plant per day.

At first, Wesseler kept up with trends such as the equipment carrier tractor[A 2] but they did not invest in new production machines for the plant.

[3] The company soon became important for the region again as a Fiat dealer, a new tractor workshop was built in 1973, and expanded in 1982.

At the end of the 1980s, Wesseler had to face major problems: A huge and expensive spares store and too many employees.

After the suspension of the insolvency proceedings, a newly founded agricultural machine company rented the Wesseler plant in 1995.

Since 2004, the tractor museum of Altenberge has been renting the Wesseler plant, which has been an LWL memorial since 2010.

Wesseler tractors had many standard fittings such as starter motors and lead-acid batteries, the customers could also order a lot of extra accessories like front loaders, three-point linkages, roofs and foldable headlights.

The Dutch Wessler dealer C. C. V. Landbouwbelang G.A on the other hand ordered tractors without lead-acid batteries.

Equipment carrier tractors got the type code WLG for Wesseler luftgekühlt Geräteträger[A 2] (air-cooled equipment carrier), narrow gauge models have the name WLS Wesseler luftgekühlt schmalspur (air-cooled narrow gauge).