These interior images of lab equipment were in the same scrapbook where I found the pictures of the great overall fad of 1920, suggesting that those guys did more than goof around. Both are dated January, 1921. Taking a strictly scientific approach, of course, I would have to say that they feel like the second floor of the Physics Building to me, although I would not swear to it. The only other option would be the Mech Lab and that just doesn’t feel right. If anyone knows (or even suspects) what they were up to with these gadgets, please feel free to chime in.
There’s one more in this bunch. It’s kind of creepy.