Capital supports miners close to strike 1, 2, 3 and more (6,4)

I believe the answer is:

number line

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'1 2 3 and more' is the definition.
I can't tell whether this defines the answer.

'capital supports miners close to strike' is the wordplay.
'capital' becomes 'berlin' (capital of Germany).
'supports' means one lot of letters go next to another (bottom letters provide a support for the top ones).
'miners' becomes 'NUM' (National Union of Mineworkers).
'close to' indicates one should take the final letters (the close of something is the end).
The last letter of 'strike' is 'e'.
'berlin' after 'num' is 'numberlin'.
'numberlin'+'e'='NUMBER LINE'

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I've seen this clue in The Guardian.

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