The sculpture "Double Form" is made by the Dutch artist Carel Visser. The sculpture is located in The sculpture park in Birk, Herning.
Aage Damgaard came to the town with great dreams and started Hakkelsesskæreriet with his brother Mads. In the 1930s two productive men from the country took over the rooms and started building the first textile industry in the middle of Jutland. They spent their success and new-found wealth buying art and attracting artists to Herning. One of the artists that Aage Damgaard managed to attract here was the Dutch artist Carel Visser, who made the sculpture Double Form.