12 fields guides : Punched Acme 12 fields. Guides field in acetate, are used for “stage design”. Used by animators and camera technicians to plot the proportions of artwork to film frame as well as movement and layout. Thanks to it, you can wedge proportions, anticipate movements, and you have several scales. Accurately shows each individual field size, as well as center, north, south, east, west and 45 degree diagonal positions.