Different font size for different monitors

Hello,

If want different font sizes for different monitors (not dual screen). Is this possible?

My situation
Laptop screen: Small font
TV screen: Medium font (otherwise is difficult to read everything)
Everything else can be the same for both monitors.
I hope this can be assinged automatically or a shortcut on my desktop.
The laptop is closed when connected to the tv.
Video cards: Intel HD Graphics 3000 and NVIDIA GeForce GT555M

Sometimes windows changes the fontsize when disconnecting from the tv, but it's always the wrong size.

Thanks in advance