APEX 58
Hello Al, This looks identical to a model made by GEC in Witton, BIRMINGHAM. I have seen and examined the GEC version at the science museum store at Hayes Middlesex during the last 1980's. This model dates from the late 1920s/ early 30s and was the senior size of machine with three sets of ball race bearings. The clever feature of this model; apex or gec was that the tools could be fitted by flipping the cover (behind the name plate/beltb chamber cover) around with no need to disengage the drive belt. The brush roller was simply a longer version of the type fitted to the gec models DM180 (junior model) and the streamlined DM380 which I think appeared post war?
Regards, Walter.