Rare military Navigation onboard electronic module.

Digital signal processing (DSP) module or on-board computer.

Rare Aviation synchronous transformer,rotary position sensor,selsyn transformer.

SECTOR AHD Tx1 video transmitter module for transmitting analog HD video signal.

A rare military specialized processor-control module.

Rare control/interface module signal processing.

Aviation module gyroscope processing unit part of the inertial navigation system

Rare USSR aviation gyroscopic artificial horizon.