Napier's Bones

1690

Napier's bones or rods

1671-1700

Set of Napier's bones, 18th century.

1701-1800

Napier's bones

1601-1700

Cylindrical form of Napier's bones

circa 1700

Set of Napier's bones, 1770-1790.

1771-1800

Set of Napier's Bones

1701-1800