Todays blog post is more Empire of the Sum
Oil Painting of John Napier in 1616
Logarithm Chart
Table of Logarithms
Logarithm Chart in John Napier Mirifici Logarithmorum Canonis Descriptio
Geometrical and Military Compass by Galileo
Brass Gunter Rule
Gunter Scale
Slide Rule
Mid Seventeenth Century Circular Slide Rule
Early Twentieth Century Slide Rule
Slide Rule of Dr.Sally K.Ride, first american woman in space