A Bendix King KI 525A <a href="https://en.wikipedia.org/wiki/horizontal_situation_indicator" class="extiw" title="w:horizontal situation indicator">horizontal situation indicator</a> model, combinating heading, VOR and ILS indicators.<br><ul><li>1: lubber line for [2]</li>
<li>2: compass card, indicates current true magnetic heading (186°)</li>
<li>3: heading select bug, pilot can set its position with [4] to memorate the direction to be followed, or for autopilot</li>
<li>4: heading select knob for [3]</li>
<li>5: heading gyro inoperativity warning flag</li>
<li>6: VOR course and back course select pointer for [8], set to radial 213</li>
<li>7: VOR course select knob for [6]</li>
<li>8: VOR course deviation indicator, currently the airplane is about 3.5° right to radial 213, or left to back radial 033, based on [6] and [2] (see more at <a href="//commons.wikimedia.org/wiki/File:VOR_Course_Deviation_Indicator_explanation.gif" title="File:VOR Course Deviation Indicator explanation.gif">File:VOR Course Deviation Indicator explanation.gif</a></li>
<li>9: TO/FR indicator in TO position, in connection with [8]</li>
<li>10: NAV (VOR) and ILS inoperativity warning flag</li>
<li>11: ILS Glide Slope pointers, currently the airplane is about 0.3° under the ideal glide slope. When ILS frequency is used then [8] indicates side deviation from the localizer center beam; when VOR frequency is used then [11] pointers are retracted or covered.</li></ul>
derivative work: <a href="//commons.wikimedia.org/wiki/User:Orion_8" title="User:Orion 8">Orion 8</a>
derivated from <a href="//commons.wikimedia.org/wiki/File:Horizontal_situation_indicator-en.svg" title="File:Horizontal situation indicator-en.svg">Horizontal situation indicator-en.svg</a> made by <a href="//commons.wikimedia.org/wiki/User:Mysid" title="User:Mysid">Mysid</a>