230A; 230B; 250A; 250B Miscellaneous Equipment Control Unit for Digital Alternative Analog Instrument Parts on group Control Unit for Digital Alternative Analog Instrument: Pos. Part No Qty Parts name Comments 1. 873226 [1] Control unit 2. 873227 [1] Trimmer Digital 3. 872498 [1] Trimmer 4. 858643 [1] Front ring 5. 873136 [1] Trimmer Analog 6. 7. 863945 [1] Bulb socket 8. 863946 [1] Bulb 9. 858643 [1] Front ring Parts catalog : High Speed Pitot Tube Log Kit Electronic Speed and Distance Log Kit Tachometer Kit Clock Kit Instrument Kit Instrument Panel Mechanical Lift Device Propeller Drive Unit: A Propeller Drive Unit: B Trim Tabs Fly Bridge Single Engine Installation Extension Kit 1'': 839548 Extension Kit 1'': 854686