Fingerprints, which age is at least 10 years, were found on old spoon made of German silver

Old spoon made of German silver.
Fingerprints were found on it, which age is at least 10 years, the person who left them, died 10 years ago.
Just an example how long the #fingerprints could be stored and longer under ideal conditions as a smooth metal surface.
Wiped then with effort, I made a photo for me to collection.

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На старой ложке из мельхиора обнаружены отпечатки пальцев, возраст которым не менее 10 лет

Correspondence of the human growth and foot length

The foot length is an average of 15.8% of the males growth and 15.5% of the females.
Human growth can be calculated by the formula:
G = (F) * 100 / 15,8 (15,5 - for women), where G - person growth, F - foot length in centimeters

Average length of the step of a man and a woman

The average length of a man's step is 76 cm
The average length of a woman's step is 67 cm
In the Soviet Union, for orientation, a very practical ratio was used, namely "2 steps = 1.5 m" or "four steps = three meters".

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Средняя длина шага мужчины и женщины