Pocket-Watch Slide Rules

Peter M. Hopp

• Publisher: Astragal Press
• Year: 2011
• eBook ISBN: 9781493054251

This book is about one of the most attractive and tactile forms of slide rules, the pocket-watch slide rule. Although pocket-watch slide rules were not the most accurate nor easiest to use, these delightful devices were featured in makers catalogues from all parts of the world for the last century of the slide rule s life. Pocket-watch slide rules are an exquisite example of the slide rule makers art and are perhaps the most collectible type of slide rules. The Book Includes: -Descriptions of over 150 pocket-watch slide rules and variants -Full-color illustrations, detailed descriptions, and dating information -Approximately 80 makers and retailers from the UK, Europe, and the USA -Descriptions of special scales used -Coverage of seminal patents -A glossary of terms -A comprehensive bibliography

Table of contents

• Pocket-Watch Slide Rules
• Acknowledgments
• Preface
• Introduction
• Historical Review
• Patents
• Pre-Boucher Calculating Rules
• Pocket-Watch Slide Rule Patents Post Boucher
• Other Pocket-Watch Calculators
• Pocket-Watch Slide Rules of the World
• The Boucher Calculator
• Calculigraphe
• Other Retailers of ‘Standard’ Calculigraphes
• Meyrat & Perdrizet Pocket-Watch Calculators
• Types of Calculator
• Lord’s Pocket-Watch Calculator
• Keuffel and Esser (K&E) Pocket-Watch Calculators
• ‘Scientific Publishing’ Pocket-Watch Calculators
• Fowler’s Pocket-Watch Calculators
• Fowler as Manufacturer
• Halden’s Calculex
• Gebr. Wichmann’s Pocket-Watch Calculators
• Molter Pocket-Watch Calculators
• Schacht und Westerich’s Pocket-Watch Calculators
• Russian Pocket-Watch Calculators
• Other Pocket-Watch Calculators
• Unattributable Pocket-Watch Calculators
• Undiscovered Pocket-Watch Calculators
• Watch Slide Rules
• Pocket Cash Registers
• Pocket-Watch Exposure Meters
• Watch Pocket Calculators
• Glossary
• Notes on Makers of Pocket-Watch Rules
• Makers & Retailers of Pocket-Watch Rules - Alphabetical
• Appendix 1 – Calculating with Pocket-Watch Type Slide Rules
• Appendix 2 – Identifying Pocket-Watch Slide Rule Makers
• Bibliography
• Late Additions