Equipment to be tested could include: telecine, motion picture film scanner, Movie projectors, Image scanners, film-out gear, Film recorders and Film scanners.
China girl, leader ladies, LAD girl or laboratory aim density (LAD) test film, is common name for a color chart test film with a color or black-and-white set up chart and a woman.
An LAD patch is neutral gray, with visual density of 1.0.
Grayscale chips are used to check for neutral color balance and correct contrast.
This is to ensure that the duplication and printing processes of the film is correct.