[2] The original concept for the carousel slide projector is credited to Italian-American Louis Misuraca, who brought his design to the Kodak company, and sold it for a lump sum.
The tray has a metal plate on the bottom with an opening approximately 5 millimetres (0.20 in) wide, barely large enough to pass a single slide to the projection gate below it.
[citation needed] A more robust version, the Ektagraphic Carousel projector, was produced for the industrial and trade show market.
During the 1970s, Kodak also produced a Pocket Carousel projector for use with miniature 110 format Kodachrome and Ektachrome slides.
[9] Less well-known but plentiful is a family of projectors based around a design originated by Sawyer's and later sold under other brand names.
[citation needed] Projectors using the 100-slide Rototray were backward-compatible with the Bell & Howell TDC-Universal straight slide trays that had been popular since the late 1950s.
[10] The 1960s would also see the introduction of a plethora of less popular tray designs, most incompatible with each other, introduced by manufacturers possibly hoping to profit from the razor-and-blades business model.
[11] The Kodak Carousel slide projector was part of the plot of the 2007 episode "The Wheel" in season 1 of the TV series Mad Men.