SIGforum
Do you know how to use a slide rule?
August 09, 2017, 12:32 PM
slyguyDo you know how to use a slide rule?
Oh Hell No
I can use reverse polish notation like a bat outta hell though. Does that count?
August 09, 2017, 12:34 PM
FenrisI have one and a 7 digit log book. No idea how to use either one.
God Bless and Protect our Beloved President, Donald John Trump. August 09, 2017, 12:36 PM
Pipe SmokerI have two Post Versalogs: 10" and 6", and can still use them – with glasses. But only for fun – say, to impress the UCSD students at Peet's Coffee & Tea.

I liked the Versalog for its better square root and log scales, but I always thought that the K&E was a nicer-looking instrument.
http://pmburgess.blogspot.com/...log-no-1460.html?m=1
Don’t argue with fools. August 09, 2017, 12:44 PM
ScoutmasterI believe my slide rule was a Pickett, I used it frequently in high school physics and electronics. I also had a circular side rule. But I was not a propeller-head, who carried the slide rule in a holster on their belt.
"Liberty lies in the hearts of men and women. When it dies there, no constitution, no law, no court can save it....While it lies there, it needs no constitution, no law, no court to save it"
- Judge Learned Hand, May 1944 August 09, 2017, 12:45 PM
sjtillAlways wanting to be different, I had a small Gilson circular slide rule for trig.
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“Remember, remember the fifth of November!"
August 09, 2017, 12:47 PM
Scoutmasterquote:
Originally posted by slyguy:
Oh Hell No
I can use reverse polish notation like a bat outta hell though. Does that count?
I teach accounting in college. It is common for students to forget their calculator for an exam, ask if they can borrow mine. I give them my HP 12C with RPN. Invariably the student plays with it, gives it back, and tells me they will do the problems by hand.

"Liberty lies in the hearts of men and women. When it dies there, no constitution, no law, no court can save it....While it lies there, it needs no constitution, no law, no court to save it"
- Judge Learned Hand, May 1944 August 09, 2017, 12:55 PM
AeteoclesNever even handled one.
I'm 34.
August 09, 2017, 12:55 PM
sigfreundYes, all the common functions. Some I was a little vague on 50 years ago and it hasn't gotten better since.
► 6.0/94.0
I can tell at sight a Chassepot rifle from a javelin. August 09, 2017, 01:10 PM
YellowJacketI have one... maybe two. Someone gave them to me when I started at GT, but I've never really looked into figuring out how to use one.
I'm gonna vote for the funniest frog with the loudest croak on the highest log. August 09, 2017, 01:21 PM
FRANKTOh hell yeah. A nice bamboo with a small canister of talcum powder, clean eyeglasses, and a good grasp of scientific notation and one is good to go.
Neatest thing I learned and still [somewhat] remember? How to find the nth root of a given number. But that was back in '72 so I'd probably stumble around a little today, at least for the first few hours.
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"And it's time that particularly, some of our corporations learned, that when you get in bed with government, you're going to get more than a good night's sleep."
- Ronald Reagan
August 09, 2017, 01:21 PM
ChicagoSigManDon't think I've even ever seen a slide rule.
August 09, 2017, 01:22 PM
dwright1951Used them in college before calculators were common (read cheap as dirt ), still around here somewhere. Was talking to a friend a while back who is a engineer asked him if he still knew how to use one, mumbled something about you can never go back and changed the subject.
August 09, 2017, 01:23 PM
nhtagmemberI had a couple of them - one I had was a circular slide rule that would fit in a shirt pocket
also had a really nice wooden linear one
wish I still had them but I tossed them when I was part way through engineering school
[B] Against ALL enemies, foreign and DOMESTIC
August 09, 2017, 01:31 PM
newtoSig765quote:
Originally posted by nhtagmember:
...one I had was a circular slide rule that would fit in a shirt pocket...
Found an old photo of you using that one:
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Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.
-- H L Mencken
I always prefer reality when I can figure out what it is.
-- JALLEN 10/18/18
August 09, 2017, 01:31 PM
610I still have mine. I used it for high school and college physics. I pull it out ever now and then just to see if I remember how to use it....takes me a little while but some of it comes back.
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Whether you think you can or you think you can't, you're right.
Henry Ford
August 09, 2017, 01:41 PM
oldRogerWhen the HP 35 came out everyone wanted one because of those pesky decimal points BUT they were about $400 and engineering managers just laughed when we wanted the company to buy them for us.
Initially Colleges would not let students use calculators in class or for exams I don't know when that breakthrough occurred. Even SR-10s were quite expensive for those times.
Doing statistics without a calculator was a slow process until we got our first deck top.
I am firmly of the opinion that a lot of mistakes are made because after the SR era, people no longer had to have a good idea of the answer before they work the problem.
There is a tendency to punch in numbers and write down answers as they pop up without worrying about whether they make sense.
When we did exams using the SR, the Profs only expected 3 place accuracy but the answer had to make sense.
August 09, 2017, 01:43 PM
YellowJacketquote:
Originally posted by nhtagmember:
I had a couple of them - one I had was a circular slide rule that would fit in a shirt pocket
also had a really nice wooden linear one
wish I still had them but I tossed them when I was part way through engineering school
I have a few engineers that always bring their fluid dynamics circular rulers to meetings.
I'm gonna vote for the funniest frog with the loudest croak on the highest log. August 09, 2017, 01:47 PM
BGULLStill have mine, can use the multiply and divide, but the other functions.......
Bill Gullette
August 09, 2017, 01:50 PM
arfmelUseta could. Probably couldn't now, though.
August 09, 2017, 01:50 PM
BGULLquote:
Originally posted by StarTraveler:
I had to buy a new Texas Instruments calculator every year after that until buying an HP11C calculator in the fall of 1983. I still use it at work every day.
Still using my HP 11C, daily at work, bought about the same time.
Bill Gullette