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Set of thirty Napier's brass rods in tin case

Set of thirty Napier's brass rods in tin case

1670-1699
Twenty-nine of thirty Napier's brass rods in tin case

Twenty-nine of thirty Napier's brass rods in tin case

1670-1699
Mechanico-mathematical instrument illustrating the ratio of the circle

Mechanico-mathematical instrument illustrating the ratio of the circle

One of thirty Napier's brass rods, signed 'Geo Brown', by George Brown, Scotland, 1670-1699. From the Library of the Lord Napier and Ettrick (see note).

One of thirty Napier's brass rods

1670-1699