Vintage instruction manual for the Stewart Speedometer, published by the Stewart-Warner Speedometer Corporation. This original 1921 document provides technical directions for the installation and care of magnetic type speedometers used in early 20th-century automobiles.

• Condition: G+
• Brand: Stewart-Warner
• Publication Date: June 23, 1921
• Form Number: 3660
• Origin: Chicago, U.S.A.
• Content: Installation guides and global service station directory

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Keywords: automobilia, antique car parts, model t era, vintage ephemera, auto maintenance, mechanical gauge, historical document, collector manual, 1920s transportation, automotive history

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