Wow, and that all fits in that small folder?
McBryce.
Wow, I never thought that the mysterious blue book would generate so much interest.
It is basically a summary document and a quick reference and while it does provide a lot of detail (It's nearly full) it also gives locations for additional information. For example...
Under Test Equipment: The Tek 2465 scope. A summary of it's status (Functional, non-functional, last calibration date, etc). A detail listing of repairs done and dates. A picture of the scope. The location of the operator/service manuals. Which in this case are PDF files so it lists the computer folder which contains the documents. (Backed up of course!)
Under Electronic Projects: These are projects built by me either my own design or from other sources. A basic description of what it does and how it operates. A schematic. A picture of the device. And the location of any additional reference material.
That's just 2 examples but I think it gives you an idea of what that blue book contains.