You would need to use a Correlation File with the same backlight/screen as the monitor you are calibrating.
But, it is highly unlikely to be accurate as no Corr. File can be guaranteed on for accuracy.
Your displays would need to be
identical to the display the Corr. File was generated on.
Also, as any reputable hire company must have a good spectro, ask them to generate the needed Correlation File - it is very simple, as defined on the i1D3 page of the website.
Steve
Steve Shaw
Mob Boss at Light Illusion