This is a 1936 Mickey Mouse movie with Donald Duck that is called Trained Seals on 16mm film. That's right, 16mm film, not tape, not CD, not DVD. You need a big honking movie projector to watch this cartoon. It came on a 7" reel that equates to around 400' of film and runs for around 12-13 minutes. Boy have we come far with our Net Flix and Red Box DVD rentals!
Next is a step up in technology..yes that's right, we go from 16mm to Super 8! Conquest of the Planet of the Apes on Super 8! What a Blockbuster! Wish I had a Super 8 player right now.
Some of you might be asking, what the hell is a slide rule? Well this one doesn't actually slide, it rotates. Anyway, to answer your question, if you were born before we went to the Moon, you know the answer, but if were born after, than this is what people used before hand held calculators. Yes, people actually did complicated calculations prior to electronic calculators. Man got to the Moon using a slide rule as well as designing some of the most classic aircraft ever...P-51 Mustang, P-38 Lightning, of course the SR-71 Blackbird.
This post would not be complete without a pair of Grandpa's shoes. Johnston and Murphy leather Chukkas in bone! According to AARP, some of the most comfortable shoes ever devised! These are 10W, and if you need them they are for sale right here!
Lastly, I give you Grandpa!