<P> In 1903 Arthur P. and Charles H. Warner , two brothers from Beloit , Wisconsin , introduced their patented Auto - meter . The Auto - Meter used a magnet attached to a rotating shaft to induce a magnetic pull upon a thin metal disk . Measuring this pull provided accurate measurements of both distance and speed information to automobile drivers in a single instrument . The Warners sold their company in 1912 to the Stewart & Clark Company of Chicago . The new firm was renamed the Stewart - Warner Corporation . By 1925 , Stewart - Warner odometers and trip meters were standard equipment on the vast majority of automobiles and motorcycles manufactured in the United States . </P>
<P> In 1903 Arthur P. and Charles H. Warner , two brothers from Beloit , Wisconsin , introduced their patented Auto - meter . The Auto - Meter used a magnet attached to a rotating shaft to induce a magnetic pull upon a thin metal disk . Measuring this pull provided accurate measurements of both distance and speed information to automobile drivers in a single instrument . The Warners sold their company in 1912 to the Stewart & Clark Company of Chicago . The new firm was renamed the Stewart - Warner Corporation . By 1925 , Stewart - Warner odometers and trip meters were standard equipment on the vast majority of automobiles and motorcycles manufactured in the United States . </P>
when did they start putting odometers in cars
when did they start putting odometers in cars
1925
1925