Ferranti optical shaft encoders : an outline of principles of construction and operation /
Pitches, B. E.
Ferranti Ltd.Rotating Components Group.
Ferranti Components Symposium(1973 :London, England)
Dalkeith : Rotating Components Group, Ferranti Ltd.,
c1974.
Presented at Ferranti Components Symposium, Royal Garden Hotel, London, November 1973.
Cover title.
Optoelectronic devices