The inside of a Dräger Tauchretter !

The oxygen bottle is removed for a better view . CO2 scrubber can is installed

Tauchretter CO2 scrubber can

Original WWII can made by AUER on the right and a post war Bundesmarine version made by Dräger

original WWII Dräger tauchretter CO2 can

paper label found on WWII vintage CO2 scrubber cans . Picture owned by Paul Darcy

Real tauchretter CO2 can and O2 bottle

Dräger made CO2 scrubber can and oxygen bottle , WWII vintage . Picture via Kenneth Chuah