Pocket-size Pink Engineer Scale from Alumicolor measures only 6-inches long. Made of high-quality extruded aluminum, they are light weight and durable. The Calibrations are applied by a photo anodized process and will never rub off. Engineer calibrations include: 10, 20, 30, 40, 50, 60 parts per inch. For both students and professionals. This is a Pink Breast Cancer Awareness item - 10% of the proceeds are donated to Breast Cancer Research