Hi all.  I am in the process of removing all my hair at too early an age.  I have created the bitmaps for a RADIO HEIGHT gauge and I am having trouble getting the code to work.  First I am a newbie at all this gauge stuff so please be kind as bald and bruises do not look good together.  First let me include the code I have as of yet.

<Gauge Name="RadAlt" Version="1.0">
     <Image Name="RadAltBackground.bmp"/>
     <Element>
           <Image Name="RadAltOFF.bmp"/>
     </Element>
     <Element>
           <Image Name="RadAltDH.bmp"/>
     </Element>
     <Element>
           <Position X="450" Y="450"/>
           <Image Name="RadAltHeightNeedle.bmp">
                 <Axis X="450" Y="450"/>
           </Image>
           <Rotate>
                 <Value Minimum="0" Maximum="5000">(A:RADIO HEIGHT, degrees)</Value>
                 <Nonlinearity>
                       <Item Value="100" Degrees="80"/>
                       <Item Value="200" Degrees="124"/>
                       <Item Value="400" Degrees="165"/>
                       <Item Value="1000" Degrees="240"/>
                       <Item Value="5000" Degrees="322"/>
                 </Nonlinearity>
           </Rotate>
     </Element>
     <Element>
           <Image Name="RadAltRim.bmp"/>
     </Element>
</Gauge>

The gauge is appearing on the panel how and where I want it.  The issue I am having is getting the height needle to represent the correct height.  Sitting on the tarmac (433') the gauge reads 85 feet.  As I apply collective the needle rotates until it indicates 5000'.  The aircraft at this point is only 293' off the ground.  What am I doing wrong?  Any help would be appreciated.

Roger that.  I began using feet and later switched to using degrees as that is what I read in a tutorial.  I will go back to feet and give it a go again.  Thanks for the help.