This is cine film transferred to VHS in 2003 of the Keil Kraft model factory shot in the 1960s. Keil produced balsa wood model aircraft kits some of which were gliders, some were powered by model diesel engines and other powered by rubber bands. They were also agents for the Superquick cardboard model buildings for use with model railways.
I had been familiar with their products from being a child but during the 1970s, along with my father and then brotherinlaw ran a model shop in Huddersfield, West Yorkshire, UK and stocked a lot of their products.
Keil's representative at that time was Fred Westerman and I believe it was from him that I obtained the VHS copy from where this video comes.
Pure nostalgia for those of us born in the 1940s, 1950s and possibly 1960s.
Sorry about the music but it was the soundtrack put on, I'm guessing, by the company who transferred the cine to video.