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Three Position Indicator

Technical Information

Catalogue No: C1110
Category: Flight Control
Object Type: Indicator/Instrument
Object Name: Three Position Indicator
Part No: 65-0655-1
Serial No: 14
Manufacturer: Grimes Manufacturing Company
Division: Unknown
Year of Manufacture: Unknown
Dimensions: Width (mm): 17
Height (mm): 30
Depth (mm): 50
Weight (g): 66
Location: Triple Shelf Unit, LH (control panels) [Main Store]

Three Position
Grimes Mfg Co
P/N 65-0655-1
5 Volt Lamps
28 VDC Coil


This is part of the Autopilot system. It uses three position rotating drum with or without a latching (memory) feature. When energized, the drum rotates to the specified position giving the equipment operator indication of the unique parameter. The top instrument is displaying ‘AP’ for ‘Autopilot’ and the lower Unit displays ‘THR’ for Runway Threshold’.

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