Ultrasonic slide rule in leather pocket case

Ultrasonic slide rule in leather pocket case with instruction

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Ultrasonic slide rule in leather pocket case with instruction
Science Museum Group
© The Board of Trustees of the Science Museum

Ultrasonic slide rule in leather pocket case with instruction leaflet

Details

Category:
Mathematics
Object Number:
1970-341
type:
slide rule
credit:
Mr J.W. Fox