Reading Digital caliper with Arduino

[animal]

tks Vinny , I was wanting to go the Arduino/ cheap caliper route . I saw that they got so far in this thread & then chuck came back with the last post . I don't know what the pull-up's resistors would do or where they would go ? I was liking what I was readin . but this Arduino stuff is all new to me . if it was a bolt or a motor I could figgure it out 
tks
animal