DSC Labs' ScreenAlign Calibration puck is an interesting visual comparison tool to help you calibrate monitors. Each control box can have up to 6 combinations of color temperature and brightness. Calibration settings range from 5000k-6500k and two luminance levels of 100nits (for standard monitors) and 1000nits for HDR displays.
Price is situated between $4,000-$5,000 depending on your needs and it's shipping now.
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