Ancient measure of length used by many countries, defined as the measurement between the outstretched arms of an adult male. Traditionally, this corresponded to 6 feet. This varied from 1.7 (Frankfurt), 1.71 (Schleswig-Holstein), 1.75 (Bavaria, Hanover), 1.8 (Baden) to 1.88 (Prussia) depending on the country and region. The Viennese fathom as a measure of length was established by Rudolf II (1552-1612) on 19 August 1588 at 1.8965 m. This resulted in an area of around 3.6 m². From the end of the 18th century, the square fathom was used as the standardised measure for area measurements.

The old field measurement yoke is also derived from this. One yoke corresponds to 1,600 square cubic metres, which in Austria equates to 5,755 m² (0.575 hectares). The fathom was finally replaced in 1889 with the introduction of the metric system. The fathom is a maritime measure of depth and corresponds approximately to the fathom. In mining, the fathom corresponds to the leachter with similar dimensions. See also a complete list under units of measurement.
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