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S-Wrench, Small

S-Wrench, Small

Usage conditions apply
Called an "S" wrench because of its shape, an s-wrench was used bolt heads and nuts in difficult-to-reach places on the locomotive. This "S" wrench has owner's name stamped (using mechanics' letter stamps) “Wooloock” into handle.
This tool is part of a collection of hand tools used in the inspection and repair of steam locomotives in the early- to the mid-20th century, roughly 1900-1955. Light repairs on steam locomotives were usually done in roundhouses at the many small locomotive terminals throughout a railroad's system; heavy repairs were done in a large, centralized repair shop serving the whole system (often referred to as the "Back Shop").
Object Name
Wrench, S
Date made
Physical Description
steel (overall material)
overall: 13 1/2 in x 2 3/4 in x 1/2 in; 34.29 cm x 6.985 cm x 1.27 cm
ID Number
catalog number
accession number
Credit Line
Gift of National Park Service
See more items in
Work and Industry: Transportation, Railroad
America on the Move
America on The Move
Exhibition Location
National Museum of American History
Data Source
National Museum of American History
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