Misses following competitors at Gateshead - these should help (5,7)

I believe the answer is:

field glasses

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'these should help' is the definition.
The definition suggests an adverb but the answer is not.

'misses following competitors at gateshead' is the wordplay.
'misses' becomes 'lasses' (lass is a kind of miss).
'following' says to put letters next to each other.
'competitors' becomes 'field' (term for those fielded in a competition).
'at' means one lot of letters go next to another.
'gateshead' becomes 'g' (head letter of 'gates').
'field'+'g'='fieldg'
'lasses' put after 'fieldg' is 'FIELD-GLASSES'.

Can you help me to learn more?

(Other definitions for field glasses that I've seen before include "They help bird-spotter" , "Binoculars" .)

I've seen this clue in The Guardian.

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