A professional who sketches likenesses of criminal suspects, according to descriptions of victims and witnesses, and prepares schematic drawings depicting scenes of crimes. Responsibilities include:

• Interviews crime victims and witnesses to obtain descriptive information concerning physical build, sex, nationality, facial features, and related characteristics of unidentified suspect.
• Prepares series of simple line drawings conforming to description of suspect and presents drawings to informant for selection of sketch that most resembles suspect.
• Questions informant to obtain additional descriptive information and draws and verifies details of features to improve resemblance of conception to recollection of informant.
• Measures distances and sketches layout of crime scene, or develops sketches from photographs and measurements taken at scene of crime by other police personnel to prepare schematic drawing of scene of crime.