Linda checks photo paper in a factory. It must pass her tests before being sold. She places two test prints side by side. Comparing them helps her spot colour changes. Both pictures should look bright and clear. Linda measures the paper with a ruler. She checks that it is the correct size. Each sheet needs to fit the printer. A small mark catches her attention. She uses a magnifying glass to examine it. Linda records what she has found. Her notes explain the results of each test. They help the factory improve its paper. She holds up a print that has passed. She is pleased with how clear it looks.