Etymology: fine-tooth comb
: to search or scrutinize intensively or minutely
I fine-tooth-combed that patch of roadside, inch by inch — True Crime Cases
scientists have gone to fine-tooth-comb the Urals and mid-Asia for new raw materials and power resources — Joseph Prescott
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fine-tooth comb, «FYN TOOTH»,
= fine-toothed comb. (Cf. ↑fine-toothed comb)
fine-tooth-comb «FYN TOOTH KOHM», transitive verb.
to go over with a fine-toothed comb; fine-comb: »
It would be squalid to fine-tooth-comb the volume for contradictions (New York Times).
Useful english dictionary. 2012.