I put in order my desk drawer and found this is what:
Then I found it in Internet - http://terni.ru/slide_rule
By the way the biggest slide rule on which to compute the orbit of the first Soviet satellite (Sputnik) was the size of a few meters.
When I was going to high school, we had a similar big slide rule in the front of most math classes. We were trying to beat the Russians to the Moon, and the slide rule was one of the tools to do it with.
I should have known there was no "slide rule gap". 
MichaelH wrote:
We were trying to beat the Russians to the Moon, and the slide rule was one of the tools to do it with.
Leonid Brezhnev has collected Soviet scientists and said:
- We will not fly to the Moon after the Americans - we will fly to Sun!
Scientists argue:
- The temperature on Sun is a million degrees!
Brezhnev calms them:
- We will fly at night! 
While I wouldn't bet that this very slide rule from the St. Petersburg State Polytechnical University was used for Sputnik calculations, a slide rule (normal size, I guess) owned by the inventor of Sputnik satellite (or "artificial moon", as they called it at those times) once sold at Sotheby's for around US $ 25,000.
The longest slide rule in Guiness book used to be around 107 meters - marginally unhandily.
I have an Otis Kings Pocket Calculator (http://www.svpal.org/~dickel/OK/OtisKing.html) , a slide rule with a 1m sprial scale on a cylinder.
Mine's the model "L". Haven't used it in a long time!
Richard Jackson wrote:
I have an Otis Kings Pocket Calculator (http://www.svpal.org/~dickel/OK/OtisKing.html) , a slide rule with a 1m sprial scale on a cylinder.
Mine's the model "L". Haven't used it in a long time!
I have seen such device in a museum. It was a slide rule and a telescope for the navigator ship. Lets change. I will send you my rule (see the first message), and you send me yours.
Mine has no telescope, it's just a slide rule. It was given to me by my father, as a novelty, after I got my first electronic calculator (a Casio), so it's not available for sale or exchange. You will have to make do with the photo 
Richard Jackson wrote:
Mine has no telescope, it's just a slide rule. It was given to me by my father, as a novelty, after I got my first electronic calculator (a Casio), so it's not available for sale or exchange. You will have to make do with the photo
Sorry, it was a joke!
My mother used this wood device (счёты - Russian abakus: считать - to calculate):
She could not only add, subtract, multiply and divide with this "computer", and take the square root!
Thanks to all!
Teachers told me at school (Cold War times) that "stupid Americans" (see the poster bellow - no one wo- or black man) are studying a slide rule with log scale (an automation multiplication and division) only in elite selected universities. American "stupid students" in high schools and in others universities are studying slide rules with linear scale (see the video below) but not with a logarithmic scale - an automation of addition and subtraction.
Sorry - but the name "a Slide Rule" is wrong. We say in Russia - a Logarithmic Rule. It is more correct
How many this old IBM calculators is now equal to one PC with Mathcad?
A slide rule with linear scale:
One soviet poster with a slide rule (more than 150 American Engineers and equal one БЭСМ computer - see above):
StuartBruff wrote:
I keep one in case of emergencies.
This is the last one I used for real ...
Fine! Like a wristwatch. Any Swiss wristwatch!
There is a Swiss wristwatch with a slide rule.
There is an interesting new Russian word - понты - ponty (a show-off in English?).
So. Swiss wristwatchs - it's a typical show-off.
A Swiss wristwatch with a slide rule - this is show-off in the square.
One dialogue of two new Russian:
- Tomorrow is the birthday of Ivan! What we will present to him?
- Let's give to him a Swiss wristwatch!
- He already has a Swiss wristwatch.
- Let's give him a book!
- He already has a book.
- Let's give him a Swiss wristwatch with a slide rule!
- Fresh idea! What is it?
- See please http://en.wikipedia.org/wiki/Breitling_SA
One more fresh idea!
A wall clock with a slide rule instead of the pendulum.
This is very convenient!
You can move the slider (roughly) and the glass (exactly) to set a precise line of the clock!
You can calculate with this clock too!
PS
One wand clock with a slide rule:
Valery Ochkov wrote:
One more fresh idea!
A wall clock with a slide rule instead of the pendulum.
A porpos! A clock - a pendulum - a rule - a meter rule!
Wath is meter?
1,650,763.73 wavelengths of the orange-red emission line!? No
The circumference of the Earth through the poles 40,007,863 m? No
The origim meter is so:
A wristwatch with a slide rule or Mathcad!
Why not!?
iWatch - a future iWatch with Windows 8:
Valery Ochkov wrote:
StuartBruff wrote:
I keep one in case of emergencies.
This is the last one I used for real ...
Fine! Like a wristwatch. Any Swiss wristwatch!
There is a Swiss wristwatch with a slide rule.
There is an interesting new Russian word - понты - ponty (a show-off in English?).
So. Swiss wristwatchs - it's a typical show-off.
A Swiss wristwatch with a slide rule - this is show-off in the square.
One dialogue of two new Russian:
- Tomorrow is the birthday of Ivan! What we will present to him?
- Let's give to him a Swiss wristwatch!
- He already has a Swiss wristwatch.
- Let's give him a book!
- He already has a book.
- Let's give him a Swiss wristwatch with a slide rule!
- Fresh idea! What is it?- See please http://en.wikipedia.org/wiki/Breitling_SA
Нет! Русские лучше!
Do you know that engineers use (used) slide rules, sorry, logarithmic rule with base 10 but mathematics - with base e (2.71828)!
Joke!
But seriously, the slide rule of algebra is the Laplace transform, which replaces the taking of derivation on multiplication and taking the antiderivative to the division. A Normal slide rule replaces multiplication by addition and division on subtraction.
Valery Ochkov wrote:
I put in order my desk drawer and found this is what:
Then I found it in Internet - http://terni.ru/slide_rule
/servlet/JiveServlet/downloadImage/2-198045-45910/LogSlide.png
The desk drawer where I found this old slide rule was covered with a old sheet of paper. This paper was not simple, but graphing paper, and not a simple graphing paper - logarithmic graphing paper, and not a simple logarithmic graphing paper (x or y) but a double logarithmic graphing paper - log by x and by y!
One more nostalgia...
Scottish engineers have to wear Scottish kilts with same design
Simple paper was a deficit in the Soviet era, but the millimeter paper (Russian name of this paper) was in excess.
Sellers of packaged goods such paper
Now in Mathcad:
Slide rules are not completely dead. If you don't like pushing virtual calculator buttons on your phone, your can use a virtual slide rule instead 
