Multiple monitors

What si the best way to calibrate multiple monitors. We have something like 20 monitors that we need to calibrate. They are all NEC and Lacie monitors running on Macs.

Can I just purchase a Eye-One Display, or Optix, or do I need something more?

thanks

Eye one display2 includes a site license. It’s DDC/CI compatible to a degree…

So - e1 looks like a good idea. Just use the same targets for all monitors.

Some NEC monitors may need propriatary software to use DDC. If you have some of those you may want to buy a copy of NECs Spectraview software as well. It will work with EyeOne D2 colorimeters.