Slide Rule

Discussion in 'Sidewinders Bar & Grille' started by Ed Storer, Mar 1, 2021.

  1. StratoMutt

    StratoMutt Senior Stratmaster

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  2. Bob the builder

    Bob the builder Most Honored Senior Member

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    TI 35
    My aunt worked there in Massachusetts & got it for me.
    That's alot o years back
     
  3. Boubou

    Boubou Senior Stratmaster Silver Member

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    Yup, used it in high school, then a buddy had a brother at the university, he got me a circular one. Got an iPhone slide rule app a few years back, but honestly, it lost its appeal

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  4. scooteraz

    scooteraz Senior Stratmaster

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    Until I broke the slide, I carried around a Picket aluminum 6’ Log-Log rule for years. Still have my Post and the book that explained every scale and operation. Used it after calculators were popular.

    Have been on the lookout for a good circular slide rule. Have yet to find one that hasn’t been priced like an original 54 Strat...
     
  5. StratoMutt

    StratoMutt Senior Stratmaster

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  6. Baelzebub

    Baelzebub Most Honored Senior Member

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    Ditto. I have a really nice one. Don't know how to use it and never have.
     
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  7. Baelzebub

    Baelzebub Most Honored Senior Member

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    I used one of those as a kid. Was pretty good with it.
    Have one hanging on the wall of my office right next to me.
     
  8. BuddhaFingas

    BuddhaFingas Strat-O-Master Gold Supporting Member

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    I had one semester in high school, right before they phased them out.

    Still have a cheapo student "pedigree" plastic one around here somewhere, but I don't remember how to do anything with it.

    Got a TI83 and a TI89 left over from later days, as well

    And a "TRS-80 pocket computer" which ran on BASIC. 4k of RAM.
     
  9. rolandson

    rolandson Most Honored Senior Member

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    Spouse is as accurate with one of these as I am with a slide rule (and I was raised on a slide rule, my father teaching me how to use his when.I was in middle school) ... but...

    She's faster.

    ETA:
    Mine, and my father's.
    IMG_20210301_210159177_kindlephoto-1617047293.jpg
     
    Last edited: Mar 2, 2021
  10. himijendrix

    himijendrix Senior Stratmaster

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    Yup, cut my teeth on a slide rule. Used one on my mechanical engineering batchelors and masters degrees. Calculators came in at this point and I used these for my PhD work.

    The great thing is that you still have to figure out where the decimal point goes in a calculated answer from a slide rule. Seems like a pain when electronic calculators do this for you, but doing it for yourself makes you more aware of real numbers and better at mental arithmetic.
     
  11. Neil.C

    Neil.C Most Honored Senior Member

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    Still got one here.
     
  12. Cerb

    Cerb Anti conformist reformist

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    I never ised a slide rule. I do own a planimeter though.
     
  13. Thrup'ny Bit

    Thrup'ny Bit Grand Master Curmudgeon

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    Dad taught me to use a slide rule as a kid. I still have his and mine somewhere.
     
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  14. Hairy Bear

    Hairy Bear Strat-O-Master Silver Member

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    Still have mine. I used it through the last years of school and through an electrical apprenticeship. By the time I began my BSc as a mature student calculators had evolved enough to make slide rules unfashionable. Never used it again but always kept it in the back of the drawer "just in case".

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  15. himijendrix

    himijendrix Senior Stratmaster

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    While we are on the subject, this is my dear old dad's cylindrical slide rule which he gave to me.

    It's equivalent to a 'straight' slide rule length of around 30 ft as I recall him telling me. He used it in his job as an aircraft design engineer back in the late '40s, just after WW2.



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  16. Thrup'ny Bit

    Thrup'ny Bit Grand Master Curmudgeon

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    That's a beauty. I've only ever seen one anything like it, in the local museum.
     
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  17. himijendrix

    himijendrix Senior Stratmaster

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    Thanks.

    There are still a few around, they come up on eBay from time to time asking £300 or so, but it's not for sale.

    I just realised that it's about the same age as me give or take a year or two!
     
  18. ukoldgit

    ukoldgit Most Honored Senior Member

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    If you know how to relate dB to a log scale, I'd like to know. dB vs power is a known calculation. dB vs perceived loudness is still in debate.[/QUOTE]

    Not sure if this helps (or if it's readable)
    P1030204.JPG
    P1030205.JPG
     
  19. bbarott

    bbarott Most Honored Senior Member

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    A slide rule was part of our freshman load-out in engineering school. Everyone got a brand-new K&E slide rule complete with a leather case and belt loop. It was a thing, I still have mine somewhere buried under a pile of physics books.
     
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  20. ZlurkCorzDog

    ZlurkCorzDog INMATE #7XX7XX7

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    Not sure about round ones but there was a company out of Canada was still supplying them some years back.