EXAMINER
examiner, inspector
(noun) an investigator who observes carefully; “the examiner searched for clues”
examiner, tester, quizzer
(noun) someone who administers a test to determine your qualifications
Source: WordNet® 3.1
Etymology
Noun
examiner (plural examiners)
A person who investigates someone or something.
A person who sets an examination.
A person who marks an examination.
Source: Wiktionary
Ex*am"in*er, n.
Definition: One who examines, tries, or inspects; one who interrogates; an
officer or person charged with the duty of making an examination; as,
an examiner of students for a degree; an examiner in chancery, in the
patent office, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition