...
https://www.imatest.com/product-category/equipment/measurement-equipment/
https://www.imatest.com/product/jeti-specbos-2501-broadband-spectroradiometer/ (luminance and illuminance measurement)
https://www.imatest.com/product/usb-illuminance-and-color-sensor/ (low cost illuminance meter)
https://www.imatest.com/product/konica-minolta-cl-500a-illuminance-spectrophotometer/ (illuminance measurement)
https://www.imatest.com/product/minolta-cl-200a-chroma-meter/
...