The Army MOS 12L is a lithographer. Lithographers are responsible for:
Producing maps, charts, and other printed materials
Using copy cameras, computers, color scanners, and plate makers
Conducting dark room processing
Producing plates and proofs
Maintaining offset duplicators, copy cameras, and plate making equipment
Supervising and performing all printing and binding, camera operations, layout, and plate making activities
Lithographers also operate offset presses and digital duplicators.