Click below to see more objects of the time
Air Cannon
https://www2.virginia.edu/blandy/blandy_web/display_linked_photo.php?file=https://www2.virginia.edu/blandy/blandy_web/arboretum/webhistorypix/RadiationPit-900px.jpg

Geiger Counter

https://www2.virginia.edu/blandy/blandy_web/display_linked_photo.php?file=https://www2.virginia.edu/blandy/blandy_web/arboretum/webhistorypix/Irises-900px.jpg