Observer

An observer is a quest item in Fallout 3.

Location
It is given to the player by Moira Brown during the quest Wasteland Survival Guide.

Related quest

 * Wasteland Survival Guide - Moira Brown asks the player to place the observer in one of the 3 batches of mirelurk eggs located at the Anchorage Memorial to observe their behavior. You must then travel to the Memorial to do so.