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Several incompatible scales for one difficulty.
Also known as: Grade conversion problem, Climbing scale divergence
The property that climbing difficulty is graded on several national scales that do not convert exactly into one another.
Records that climbing difficulty is graded on several national scales.
Contexts: Public information
Has no exact conversion between scales, because each grades a slightly different thing and conversion tables are approximate by construction.
Contexts: Public information
Not one mark but several notations: a figure, a figure with a letter, or a Roman numeral, each belonging to a different national scale.
A fuller structured visual breakdown is not yet documented for this symbol.