After seeing an episode of How It’s Made that showed them, and remembering seeing reproductions sold at the local Renaissance Festival, I looked up astrolabes online. For a long time, it was the state-of-the-art astronomical instrument. You can duplicate my search without much trouble, but I’ll put two links here that I found interesting:
The Electric Astrolabe is a web app you can use.
This site at the University of Hawaii allows you to generate customized astrolabe templates that you can download.
I saw this and thought it was right up your alley. =)
Yep, I can remember recording that song off the radio onto a little Aiwa 3″ reel-to-reel recorder so that I could play it back and get the lyrics. I did that with a lot of songs back then.