give something/someone the once-over
US /ɡɪv ˈsʌmˌθɪŋ ˈsʌmˌwʌn ðə wʌns ˈoʊvər/
UK /ɡɪv ˈsʌmˌθɪŋ ˈsʌmˌwʌn ðə wʌns ˈoʊvər/

1.
to quickly look at someone or something, especially to check them or to form an opinion of them
:
•
The mechanic gave the car the once-over before the long trip.
•
She gave him the once-over, deciding if he was trustworthy.