Inspection locomotive

An inspection locomotive was a special type of steam locomotive designed to carry railroad officials on inspection tours of the railroad property. They were fitted with passenger car-like bodywork and seating. Many railroads in the 19th Century owned one, but their use dwindled in the 20th Century. They were replaced with converted passenger-car inspection cars , or inspection motor cars , automobiles fitted with steel flanged wheels.

Some were especially built for this service, while others were rebuilt from obsolete locomotives. Many were quite small; the locomotive pictured is in fact one of the largest and most modern inspection locomotives ever constructed. They were generally well cared for and highly decorated.

The only known surviving example is the Reading Railroad's "Black Diamond", a tiny 2-2-2 with fully enclosed bodywork, at the Museum of Transportation in St. Louis, Missouri.