I have found this instrument in the trash. Can anybody identify this thing? On the inside you can see that the circuitboards are labeled. It says "igav" or maybe "igau" or something else...
https://preview.redd.it/dxrlwjuxvo571.jpg?width=3264&format=pjpg&auto=webp&s=c2a4acc0491cda4e599c40ab070282d681853aff
igav?
https://preview.redd.it/jer0wunzvo571.jpg?width=2997&format=pjpg&auto=webp&s=224c6b1c4173473a5b8ec72abed2154e8c90c80c