Rotor, meter and meter drive unit, for Postal franking machine, Frankopost Simplex
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LicenseThree parts of a Simplex postal franking machine:- (a) Rotor
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© The Board of Trustees of the Science Museum
Three parts of a Simplex postal franking machine:- (a) Rotor, (b) meter, (c) meter drive unit mounted on a single stand constructed in the museum workshops
