Hi again. I googled a little for these things. Here is whats up: As those digital caliper (german: "Messschieber"?) are still patented, its not easy to get the whole info. BUT: Its measuring the distance with a capacity ( ... whatever ...). I´ve got no idea *what* capacity, but I could imagine the capacity from the two metall pieces, which is then digitalized and linearised. ... or somehow ... :P again: whatever So, as its a capacity: No use for us... (or maybe???). However, building this for an MB would be ... ... crazy! (so I´m pretty sure somebody of you will try it out) ;D Greetz