Inserted on the listing are "VIRTUAL" Slide Rules with Hyperbolic Scales. These were designed by individuals and put on the Internet for use. Those that are copies of actual Slide Rules are listed with the Slide Rule, and also below.

Those that are not copies of actual Slide Rules are only listed below.

1. Slide Rule Emulator. Made by, Robert Wolf: http//www.hercsmusicsystems.com/sliderule.html

2. Hemmi 153: Made by Unknown Person (See Number 41 on listing): http://tinyurl.com/kufjjx

3. Hemmi 153: Made by, Mark Armburst (See Number 41 on listing): http//www.marksmath.com/slide-rules/virtual/hemmi-153/hemmi-153.html

4. K&E 4093: Made by, Mark Armburst (See Number 52 on listing): http//www.marksmath.com/slide-rules/virtual/ke-4093/ke-4093.html

5. Pickett & Eckel N4 - ES Vector - Type Log Log Dual Bass. Made by Derek Ross (See Number 80 on listing): http//www.antiquark.com/sliderule/sim/n4es/virtual-n4es.html

6. Pickett & Eckel N4 - ES Vector Type Log Log Dual Bass. Made by Unknown Person: http//tinyurl.com/6ego8sk