Magic Lantern projectors evolved over time from flammable materials driven devices to electricity, but still referred to as magic lantern projectors into the early 1900s. These slides were for the electric versions.
Sorry but I don't have any info on the blue pencil. I've had it a long time and can't remember the source, and I've never seen any advertising materials covering it. Dan Reppert is a good source for all things Sheaffer.
I really enjoy these threads that cause me to go searching for what, if anything, I can add to cause. So, attached is a shot of some of the Univer pens and pencils that I've dug up in my collection. David has added the links to some of the other Univer threads that contain some of the shots of other of my pens. It seems that we are patching together quite a range of Univer styles and colors. Thanks for starting this thread.
Edit: Pat's Thumbnail image from FPB Album presented full size via pasting the BBC Code option, courtesy of Ye Olde Admis