The Aldis Epidiascope (Griffin and Tatlock Brochure, circa 1940)

A six-panelled folded leaflet.  4to.  There’s a little gentle edge wear and the two exterior panels of the leaflet are a little toned else the brochure is neat, clean and bright.

A circa 1940 sales brochure from the prominent manufacturer and supplier of scientific instruments Griffin and Tatlock promoting the Aldis Epidiascope – a projector capable of project both opaque objects and transparent slides.  The illustrated brochure gives details of the epidiascopes benefits, components and uses, describing it as the only portable epidiascope that illuminates and projects very nearly the whole of diameter range.