This is one of the first ever vacuum flasks. While we generally use them to keep our drinks hot, vacuum flasks were invented by James Dewar in 1892 to keep things very cold. Dewar was interested in ...

Restoration of an old rusty flask from the First World War. I found this old rusty military flask on a WW1 battlefield. The flask was in terrible condition. The bottle was very rusty and damaged. I ...