Artificial Horizon / Attitude Indicator

Technical Description
Gyroscopic attitude indicator displaying aircraft attitude relative to the horizon in pitch and roll. AGB-3K Series 3 is documented in Mi-8-family service; the user-provided AGV-3K-3S string may be a transliteration or variant marking and should be confirmed directly from the equipment data plate before procurement.

Verification Status
Medium-High – model family confirmed; exact marking requires confirmation.

Source
https://bizorg.su/pribory-aviatsionnye-r/p2092635-aviagorizont-agb3k

Identification Note
The photograph is provided for reference. Procurement identification must be based on data plate markings, P/N, S/N, approved configuration and airworthiness documentation, not visual appearance alone.