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R 101 Spare Warning Bell
A spare audible warning bell from the control car of the R101. On display in Bedford Museum's R100/R101 exhibition.
Meyers b10 s0522 b1 - Public domain book illustration
Deutsch: Schwartzkopffs Universalkontroll- und Sicherheitsapparat.
Meyers b10 s0522 b2 - Public domain book illustration
Deutsch: Details des obersten und untersten Teils des Schwartzkopffschen Apparats.