Friel-Sturdy radiographic slide rule with case by

Made:
c.1946 in England
manufacturer:
Unique Slide Rule Company Limited

Friel-Sturdy radiographic slide rule with case by the Unique Slide Rule Company, used to determine exposure times for medical X-rays.

Details

Category:
Mathematics
Object Number:
1998-631
Materials:
cardboard, complete, plastic, wood
type:
slide rule (radiation)
credit:
Dr D.J. Friel

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