Trucker's slang for the log books they are usually required to take along on their trips. Some truckers hate taking these along, because they have to document all sorts of information that may affect how much money they make.
"...We tore up all a our swindle sheets an' left 'em settin' on the scales..."
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).