Ever seen these…

[porsche tech]

Got lots of use out of these things over 42 years in the bidness. They used to hand them out at training classes. Two different styles but same info front and back. Still pretty handy.

[rwest]

This is the one I have and I have no recollection of when or where I got it!

[Rick Lee]

I have a photo somewhere I took in a bookstore in Denver of a price chart for a 50% off sale. Yes, they had to print a chart to show what 50% off worked out to be. Only in America.

[john walker's workshop]

I drag mine out all the time. Cool tool. Got the top one.

[ZOO]

I have my grandfather's. I don't have a need to use it, and if I did I'd have to find a tutorial on YouTube .

[Geneman]

very cool tool. anyone know where to purchase? thanks. frank

[jrj3rd]

Frequently on ebay. about $50. Search Porsche Conversion Chart or Slide Chart

[porsche tech]

Another one that is packed full of technical info on every subject you can imagine.

[unclebilly]

When I was a kid, these were in all my parents vehicles…