Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material		DateScale LengthArea of Use
Circular and Spiral Slide Rules
FXR / Radio Transmission Line Calculator & Smith Chart
FXR Inc.
USA
Plastic
1950s
Ø 23.2 cm
Electronic

Notes: May have been a promotional give away as other versions exist. A specialist slide rule for electronics engineers for visualising the impedance of antenna and radio frequency (RF) transmission line systems.


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