This model is from the № 1 Aeroplane Constructor kit produced from 1931 to 1941. This set dates from the late 1930s and is in need of restoration.
There was also a larger № 2 outfit. Both sets were interchangeable and could be used with regular Meccano. There were also the smaller 0 and 00 sets, but having smaller nuts and bolts, these were not compatible with the № 1 or № 2 aeroplane outfits or other Meccano.