Appendices


What Are Hyperbolic Scales? General Notes
Sources of Information and Acknowledgements Slide Rules Designed by Blanc and Pletts
Chinese Slide Rules Dietzgen Slide Rules
Hemmi Slide Rules Keuffel and Esser Slide Rules
Pickett and Eckel Slide Rules Relay/Ricoh Slide Rules
Virtual Slide Rules Special Slide Rules
Symbols and Gauge Marks