Still love your old slide rule? This guy was obsessed

I can't think of what could have been a more frustrating job than being a service repair tech for the old mechanical calculators. They contained hundreds, if not thousands, of small moving parts jammed into a tight space.
 
My high school chemistry teacher forced us to use slide rules, no calculators in his class (he considered them a fad), - never saw one since. Only thing that I could use it for now is to scratch my back.
 
Slide Rule

My Father was a master carpenter. Short sleeve shirt, two pockets with protectors. In right pocket a can of Prince Albert tobacco for his pipe. In his left was his slide rule and mechanical pencil. I have the slide rule in a brown leather sleeve to protect it. I took it out once and gave a go at using it. Failed!! Too many moving parts. LOL.
Thanks for awakening some memories. Our schools are failing in math. Even when the cash register tells them how much change to return they have trouble counting it out to you.
 
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