Observer

havainnoija

(one who makes observations, monitors or takes notice)

noudattaja

(one who adheres or follows laws, guidelines, etc.)

tarkkailija

(one who makes observations, monitors or takes notice)

tarkkailija

(person sent to monitor but not to participate)

tarkkailija

(entity with limited participation rights)

tähystäjä

(aircraft crew member)

tähystäjä

(one manning an observation post)