[AFMUG] Accuracy of on cable foot markings

[Nate Burke via Af]

I just got some 5000' spools of Belden 7919a cable in, and looking at 
the cable foot markings from both ends of the cable, they're all about 
20' short.  When I get 1000' spools, they've always been spot on (as far 
as matching the cable markings) Is this just the discrepancy in the 
tolerance of the cable markings at that distance?