The dynograph car
Publisher: [s.n.]
Published: 1886
Place of publication: United States
Language: eng
Notes: Caption title.

Detached from an unknown publication.

" ... a sort of automatic track inspector which passes over the rails, and not only makes a memorandum of a weak spot, but puts a daub of paint on it so the repairer will know where to come to and exactly what is wrong when he gets there ... ".