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=={{int:filedesc}}== {{Information |description={{en|1=A guide sign on {{w|Interstate 19}} in {{w|Arizona}}. Built in the 1980s, when the United States was {{w|Metrication_in_the_United_States|considering switching the the metric system}}. The sign is posted Tucson AZ, warning drivers that the {{w|Interstate 19#Signage|Interstate uses metric measurement on guide signs}}. (Font used is Series D, sign not to scale.)}} |date=*Sign: Unknown - Assumed 1990s - 2000s * This file: 6 June, 2019 |sourc...