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Post Versalog Slide Rule Instructions Hardcover – 1963
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The reason to use a slide rule at all is that you will be doing mental exercises unavailable to you when you use a calculator. You end up with a very different feeling about physics, engineering and financial formulas when you use one, versus on one side doing the work with a calculator or computer, and on the other side, by hand. I really do UNDERSTAND a lot more because I can use a slide rule. It's also amazing how accurate you can be by using one. It works to know that before computers, slide rules built airplanes, submarines, the railroad system auto assembly lines, Hoover Dam and the Flatiron Building.
I own slide rules from five different makers. Post's quality was the best, and I really like the arrangement of their scales on all their models. The Versalog is one of four basic models, by the way. The book is thorough and it is concise. This book would do anyone good who wants to learn more about slide rules, and belongs on the shelf of anyone who wants to use a Post. Most slide rule books are written using one manufacturer as the reference. Sometimes scales referred-to don't exist on other rules. For example, K & E's sometimes have A and B scales. My Post Scales don't have them. One of my other slide rule books spends a good bit of time on how to use A & B scales. That's kind of like being taught how to steer a submarine when you live in the middle of the Mojave desert.
If you do own a slide rule, buy a Post if you don't have one. Then, buy this book.
explains the use of this wonderful instrument, which I never want to forget.
If you know more than the four common uses of mathematics, and you're into
the ancient way of life (straight razors, oil lanterns, blacksmithing....) This book
is great. I also purchased a book from a 19th century professor and really feel
that we need to keep the old way alive. I'm not worried about the the end of days
or survival theorists, just holding on to how we got here I guess.
These pre-calculator --- calculators are great once you know how to use them.
They can do pretty much all that today's calculators can do (almost) but they don't
break down and you never need batteries. But you need to know how to use them.
After all, they did put us in space and on the moon...