A professional who collects, records, and evaluates information pertinent to location of enemy weapons for use by friendly artillery, using chronograph, gun direction computer, and other fire direction equipment. Respnsibilities include:

• Observes enemy fire, using transit and records angle to firing position.
• Measures velocity of projectiles fired from enemy weapon, using chronograph.
• Determines direction of enemy weapons, using gun direction computer.
• Collects data and constructs firing chart to plot target location.
• Computes azimuth (direction), elevation, and other firing data (information to engage target).
• Communicates firing data to artillery unit personnel, using radio and transmits artillery fire adjustment data to artillery unit.