A quick update from MG.
Thank you for your email and apologies for the delay as I have been attempting to find the required data.
The screen will show bar only, from what we can see, however if you prefer to work in psi, then details of this are included in the technical data section of your owners handbook.
Again, I am sorry for any inconvenience caused whilst waiting for a reply.
Yours sincerely
Customer Service Coordinator