This is the 3rd edition of the VT100 Pocket Service Guide.  This version has a rounded back, and a four-X width fold-out schematic on the back page.     
 
I was a DEC Field Service Engineer during the 80s and 90s.    This is one of the pocket service guides that I carried in my briefcase.   It has seen some use, but the pages are still all there, and in very good condition.    You can own a piece of computing history, with the service guide to the iconic video terminal that you saw in campus computer labs all over the world in the 80s.    If your VT100 is not working, this service guide might help you to repair it.

I was a VAX specialist (worked in the SV and NI factories in the 80s and then in the field) and have programming guides, service cards, schematics, and other souvenirs from that era.  See my other auctions for more of the same.       

This item will be packed in cardboard, and shipped in a trackable flat rate envelope.   I ship within the united states.  Happy Bidding.