Oldest device in your collection

[BlitzBiker2001 (Cam)]

FCI SBS-1201 UV damaged vs non UV damaged

[image] I finally got around to testing the FCI SBS-1201 smokes I got from the FCI FC-72 system back in June, and decided to do a side by side comparison of the most yellowed smoke versus the whitest smoke. The yellowed smoke came from a hallway next to a window for 32 years, the other one was in the elevator machine room, with little UV exposure. Surprisingly they both still test good, even the yellowed one.

[anon8378335]

Old Friedland DC solenoid bell made in Stockport, England