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Title: Circular slide rule by Pickett, metal and plastic, in leathe [Go to resource]
Description: Circular slide rule by Pickett, metal and plastic, in leather pouch with instruction booklet License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: circular slide rule Source: Science Museum Creator: Pickett Identifier: 1985-275 Go to resource More Like this...
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