a woman looking through a microscope in a room

Recording instantaneous discs at the Finnish Broadcasting Company in 1940ies Recording instantaneous discs at the Finnish Broadcasting Company in 1940ies. Unidentified worker during Second World War. Pikalevyjen äänityslaite (kaiverruslaite). Ääniä ja radio-ohjelmia tallennettiin sellakkakalvopintaisille metallilevyille. Lotta-puvussa oleva tunnistamaton nainen työssä Yleisradiossa. https://www.flickr.com/photos/ylearkisto/29471536265/