caseman

noun2

1. •
   (slang) A person who examines a building to determine whether it is worth burgling.

   • Based primarily on his record as a suspect in several prior burglaries and his reputation as a “case-man” − a man who could expertly plan heists − investigators became interested in Anthony Pino. — 2015
2. •
   (historical) A compositor; a typesetter.