A very old computer

I came across an interesting old (1964) computer recently – an analog device (slide rule) designed to help reliability engineers calculate the cumulative binomial distribution. Here's what the package for this computer and its manual looks like:

Slide - manual 

Here are its instructions:

Slide - instr 
And here's what one side of the actual computer looks like:

Slide - side 1
They just don't make them like that any more, do they?   

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