True airspeed - pressure density monitor

[ExcessionOCP]

Hi,

I want to set my true airspeed on the airspeed indicator but can’t see any way to determine the current pressure density? Where is that displayed? Thanks!

[Black Square]

Pressure altitude is the altitude displayed on the altimeter when the barometric pressure is set to 29.92 inHg or 1013 mb (hPa). Easy as that