On: Mechanical Watch

[modeless]

He didn't do planes yet but he did the internal combustion engine: https://ciechanow.ski/internal-combustion-engine/ and boats: https://ciechanow.ski/naval-architecture/

I could post more but just go to the archives and see. Every single one is a treasure and there are few enough that you can read them all: https://ciechanow.ski/archives/