The Log/Log DeciTrig; my first slide rule. :-)
If you have a great idea for a new business and now you're looking for funding or other support, you'll probably have to break out the PowerPoint. There are only ten slides you should need for your pitch.
Smith Chart slide rule
Nuclear Slide Rules #infographic
The Appeal of Slide Rules - For Use and as Collectables.
this is an example of rule of thirds because the bottle is the main focus and the sky is only 1/3 of the picture The hot spot would be the bottle because its where the two lines intersect
Slide rule - Wikipedia, the free encyclopedia
Slide rule site http://www.stefanv.com/calculators/aristo970/index.html