Location arithmetic

One of three devices to aid arithmetic calculation described by John Napier in a treatise

Wikidata entity: Q6664794

P50 author ... Q159592 (John Napier) John Napier
P31 instance of ... Q1666865 (mathematical instrument) mathematical instrument
External Ids
P646Freebase ID/m/04h9gg
P6366Microsoft Academic ID (discontinued)2776445905

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