Editing Railroad chronometer (section)

==Overview==
Regulations of the watches used by critical personnel on the railroads (engineer, conductor, switch yard controllers, etc.) were specified almost from the beginning of widespread railroad use in the 1850s and 1860s.<ref>National Association of Watch and Clock Collectors [http://mb.nawcc.org/showwiki.php?title=Railroad+Time+Service "Railroad Time Service"]</ref>  These regulations became more widespread and more specific as time went on, with some watches that were "railroad standard" at an earlier time eventually becoming obsolete as technology improved. There was, however, no absolute, universal definition used across different railroad lines. Each company appointed one or more "time inspectors" (typically a [[watchmaker]]) who decided which watches were acceptable for use. In the United States, the [[American Railway Association]] held a meeting in 1887, which resulted a fairly standardized set of requirements,<ref>Google Books – ''American Railway Association'' – [https://books.google.com/books?id=wRotAAAAYAAJ&dq=american+railway+association+1887&pg=PA8 "Historical Statement"] Page 8</ref> but not all railroads adopted them.