This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Meyers b. de Dampfkessel mit gewelltem Flammrohr Foxscher Meyers ca author PDMeyers Images from Meyers Konversationslexikon th edition text figures Flued boilers Samson Fox
Page 2023 Free-images.com. All images are Public Domain