Dual-Scale Altimeter for FSX
=================
This altimeter can be used to replace the default altimeter in a number of aircraft, if pressure settings in Hectopascals (millibars) (European System) is preferred to Inches of Mercury (US System).

The altimeter has two Kohlsmann scales, hectopascals on the left, inches on the right. The Kohlsmann knob is used to change the setting.  Both scales are coordinated so that they both read the same equivalent value at any setting.

If you click on the gauge face anywhere above the Kohlsmann knob, a larger version is displayed for easier reading of the Kohlsmann scales and setting of the pressure value.  Click in the same area on the enlarged gauge, and it will return to its standard size.

This version has been debugged and tested on the FSX boxed version and the FSX Steam version Default Cessna C172 

Installation
======
Make a safe copy of panel.cfg, e.g. panel.cfg.saf
Open the panel.cfg file in Notepad, and edit the text by replacing the altimeter gauge name you find with Altimeter_HPa!Altimeter
e.g. for the default C172
change
gauge00=Cessna!Altimeter
to
gauge00=Altimeter_Dual-Scale!Altimeter
Do not change the numbers on that line, and make sure that all the commas are present after the text and between the numbers.

Do the same for the Virtual Cockpit [vcockpit01] and any other section, such as a landing panel where there is an Altimeter line.

Aircraft without a Minipanel
============================
In the [Window Titles] section (top of the file) add
windowxx=Altimeter
where xx is the next sequential number in the list of windows. e.g.

[Window Titles]
Window00=Main Panel
Window01=Radio Stack
Window02=GPS
Window03=Altimeter



Aircraft with a Minipanel
=========================
e.g. the default C172
Place the line
windowxx=Altimeter
last but one in the list, ensuring that the Minipanel entry is the last one, as shown below.

[Window Titles]
Window00=Main Panel
Window01=Radio Stack
Window02=GPS
Window03=IFR Panel
Window04=Landing View
Window05=Altimeter
Window06=Mini Panel



For all Aircraft
========
Copy the following code into panel.cfg after the last [Window xx] section before the minipanel, if there is one, and before the [vcockpit01] section.
//--------------------------------------------------------
[Windowxx]
Background_color=0,0,0 
size_mm=305,305
window_size_ratio=1.000  
position=0
visible=0
ident=150
window_size= 0.200, 0.267
window_pos= 0.300, 0.490

Gauge00=Altimeter_Dual-Scale!Altimeter
//--------------------------------------------------------

where xx is the same number that you used in the [Window Titles] section.
Note that in the default C172, the various [Window00], [Window01] etc. sections are not in sequential order.  This is not important as long as the numbers xx as in [Windowxx] are correct and match the [Window Titles] entries. You may prefer to move them all into a sequential order.

Unmodified default Cessna 172
=============================
If you have made no other changes to the default Cessna 172 panel, you can substitute the existing panel.cfg file directly with the one included in the zip.  But do keep the original file (by renaming) as a backup.  The panel.cfg file included in the zip has the [Windowxx] sections in sequential order.

Peter Dodds
CIX VFR Club
06/05/2016