eye up

verb2

1. •
   (informal) To examine (something or someone) closely (often, something or someone coveted).

   • That creep in the corner was eyeing me up.
   • The dog was eyeing up my steak.
2. •
   (informal) To examine casually by eye, with little or no measuring or testing.

   • Hey, while you're there, take a look at their furnace. You don't have to inspect it — just eye it up and tell me whether it's decrepit or not.