Ad unguem.

http://lila-erc.eu/data/lexicalResources/LatinPortuguese/Velez/id/UsageExample/n0082.sg01.s02.u05 <http://www.w3.org/ns/lemon/lexicog#UsageExample>

Ad unguem. 
i, exquisitâ diligentiâ, & curâ exactissimâ. 
Ad unguem, 

data from the linked data cloud