Testing US military Z-Binoculars, early infrared systems. Approximately 1944-1945.

Submitted ⁨⁨14⁩ ⁨hours⁩ ago⁩ by ⁨setsneedtofeed@lemmy.world⁩ to ⁨historyphotos@piefed.social⁩

https://lemmy.world/pictrs/image/a5580b63-7851-4b69-980e-054443b5aee3.jpeg