After Installation of the Viewer you can examine the Slide rule by clicking on the image below.
Scroll down this page for more information.
You can use it to explore the operating principle of a Slide rule, zoom in on every part and perform actual calculations.
To view the model you need a VRML viewer: a plug-in for your operating system that allows you to view the Slide rule, and other VRML worlds.
Installing the recommended browser is free and automatic. I does not expire, but a little logo floats trough the scene. Just ignore it. It helps if you imagine that its a flying saucer with aliens looking at the slide rule too!
Click on Installation of the Viewer here or in the main menu.
Once the viewer is installed properly VRML files can be displayed in most Browsers.
In the unlikely event that your browser does not display VRML after the installation you can dowload the files to your computer and view YASS without the need to be connected to the Internet.
Click on the link YASS for 0ff-line viewing and follow the instructions.