A measurement page contains rows of color patches that you can measure using a color measurement instrument, such as a spectrophotometer. The measurement procedure depends on the instrument.

You must calibrate the instrument before measuring patches. Some instruments have a self-calibration feature to check the correct functioning of the instrument. For example, the instrument may be calibrated by checking its ability to measure a known color sample accurately. If self-calibration is available, you must calibrate the instrument before proceeding to measure a page.

Handheld instruments require that you follow instructions to place the page and measure each row of patches on the page. Automatic instruments measure each row and advance to the next row without user interaction. Some instruments also position the page automatically.