Erwin Sattler Rotalis Bedienungsanleitung Seite 103

3.
Which finger should be used?
D Fingertips with many scars, injuries or an extremely poor structure are not suitable
for »user fingers«
Fingers that are prone to be injured (e.g. while working manually) should not be used
D
D If the fingers are very strong, the forefinger or little finger can be a good choice
If the fingers are very thin or of children, the thumb should be preferred
D
D The fingertips of the left hand of left-handed persons are usually more nagged than
those of the right hand of right-handed persons.
D It is recommended to save 2 different fingers for each person to still have one available
in case of an injury.
If only a few persons use the device, more fingers for each person could be acquired
D
because it figures out later which finger is the favorite
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