C.F.R. » Title 49 » CHAPTER II—FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION › PART 230—STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS › Subpart B—Boilers and Appurtenances

49 C.F.R. § 230.56

Water glass lamps

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All water glasses must be supplied with a suitable lamp properly located to enable the engine crew to easily see the water in the glass.