Parts for building a high end analogue calculator

[John Wagenseil]

Analogue Calculator components:
https://static.scientificamerican.co...Slide_rule.pdf


Computer simulation of analogue calculator
Virtual Pickett N909-ES SIMPLEX TRIG RULE with METRIC CONVERSION Slide Rule
Analogue Calculator Instructions
http://www.antiquark.com/sliderule/s...structions.jpg


Build a replica of the most accurate mass market analogue computational device from paper and a few wood and metal scraps.
Bob's Calculators and Slide Rules - 3 Thacher Replicas
Wayne Harrison's Slide Rules - The Thacher Calculator
How to use it once you have made one
https://www.sliderulemuseum.com/Manu...eRule_1884.pdf

(PS. To any one who purchased an HP-35 back in 1971, shame on you for contributing to the death of the slide rule industry).

[twg48]

Thanks for all your time in discovering so many great sites.

My older brother had to learn to use a slide rule in high school back in the early 1960's.
I was terrified that I was going to have to go through what I perceived to be the same incredibly tedious class too. Fortunately when I started high school in 1965 the dreaded slide rule was no longer taught. LOL

After visiting your posted sites all the "dread" I felt back in 1965 came rushing back. WHEW! didn't realize until now what a HUGE "bullet" I had dodged all those years earlier!

[FRD]

That is very interesting, good find..

[Viator]

I still have my own slide rule somewhere! It was an excellent invention. Thanks for sharing!

[Don Boose]

I still have the Keuffel & Esser slide rule that hanged from my belt during the four years that I attended the Baltimore Polytechnic Institute high school in Baltimore, Maryland 1954-58.

Not to mention my set of drafting instruments and my Leroy lettering set.

"Presses print. Poly Boys letter."

Don

[altomentis]

I never did learn how to use a slide rule. My father always had one. He was not able to go to college for several reasons, however he was a born engineer. If he wanted to make something he did.

He worked with the local small town grocer and built a freezer for all those new-fangled frozen foods. He also installed the first in-car drive-in theater speakers on the West Coast. When he was a city electrician, it occured to him that he could use a barn door remote system to raise and lower a small drawbridge so that it could be operated by one person.

[murphyaa]

You'll never believe what I just found at a thrift store for $15...

[John Wagenseil]

Originally Posted by murphyaa

You'll never believe what I just found at a thrift store for $15...

NICE!!!!
Classic.

[Amccombs3]

Reminiscing time: “Pocket” calculators were introduced when I was in engineering school. There was quite the debate about whether and when they could be used for schoolwork, since not everyone could afford them. My father got me a Hewlett Packard HP-45 (introduced in 1973), which he got at a company discount price of $325. That was serious money back then. But since I had been in engineering school for 2 years at that point (I’ll save you the math, I’m 71), I was already proficient with a slide rule. I used a circular one since it fit better in my purse! My husband and I used to run time-speed-and-distance rallies with that little sucker, even after I got the calculator, because there are no batteries to run down with a slide rule! All the big kids used Curta calculators (“pepper grinders”) for rallies, but we couldn’t afford one.

[FRD]

I still have a slide rule, but I could find any buttons ..