Three Videos about using Napier's Bones.
Multiplying, Dividing and Square Roots.
Napier's Bones Videos
A Video about using Napier's Promptuary
Napier's Promptuary Video
A Video about using Napier's Local Arithmetic
Napier's Local Arithmetic Video
Napier's Bones Videos
Napier's Promptuary Video
Napier's Local Arithmetic Video
Napier Maths