"How plastic slide rules were made by K&E is the main theme but along the way there are many details about how the scales were laid out, how the molding masters were made and many production details. The bizarre story about the Analon is finally told by someone that was there. How K&E managed the design project of a new major slide rule is told"--

For hundreds of years, the slide rule has been a useful calculating device. In his second book, Joint Slide Rules: Sectors, 2-foot 2-fold and similar slide rules, expert Peter M. Hopp examines the joint rule, completing an important but neglected part of slide rule history. The book is a comprehensive account of joint rules and contains detailed information on over two hundred joint slide rule makers from around the world. Calculating devices that preceded the slide rule, such as sectors and timber rules, are examined, as are special joint rules that incorporate additional elements, such as callipers. Special jointed devices, such as dip rods that allow calculation, are also included. With the addition of over one hundred detailed illustrations of joint slide rules and a glossary of terms, this book is essential reading for anyone interested in joint slide rules and their history.

Bonus content "What's Your Retirementology I.Q.?" included in this digital edition. Looking ahead to retirement? Depending on your circumstances and your age, you may no longer have any margin for error. And your emotions and irrational behavior could be perpetuating a dangerous cycle of overspending and rising debt that may shatter whatever vision of retirement you still have. Welcome to the world of Retirementology. Retirementology bridges retirement planning with investor psychology and the market Meltdown of 2008 to produce an entirely new way of thinking about how we spend, how we save, how we borrow, and how we invest. Financial mistakes are deeply rooted in human nature, but you may be able to overcome them--if you understand the breakthrough principles of behavioral economics and apply them in your own retirement planning. Dr. Gregory Salsbury identifies some of the classic cognitive biases and behavioral mistakes most of us keep making when it comes to retirement planning. For example: Why will people drive 45 minutes to use a $2.00 coupon? Why won’t people sell a poor performing stock just because they inherited it from grandma? Why do people spend differently with a credit card than they do with cash? Why do people believe that they paid no income taxes because they received a refund? You’ll learn why the financial meltdown has amplified the impact of these all-too-human cognitive mistakes and discover ideas for addressing them. The bottom line for your bottom line is that retirement can no longer be ignored, viewed as a single event, relegated to a “zone,” or romanticized. Instead, you must understand how every spending and financial decision you make from here on can impact the way you will spend your golden years. Retirementology attempts to help you do just that. Retirement planning: right brain versus left brain Why these different areas of the brain impact financial decisions--and what to do about it It’s real money! “De-layering” your finances How to overcome the psychological tricks that separate you from your money Family matters: managing financial support decisions for your extended family Choosing between your family or your retirement Get “long-term smart” How longevity, inflation, volatility, and your own expectations impact your retirement goals

Out of Control chronicles the dawn of a new era in which the machines and systems that drive our economy are so complex and autonomous as to be indistinguishable from living things.