• Introduction
• Why machines?
• Before Schickard
• Schickard
• 17th-19th century
• Leibniz cylinder
• Odhner pinwheel
• Pinwheel -evolution
• Other systems
• Rules, disks, cylinders
• Slide adders
• Turn, turn, turn
• Combinations
• Made in Belgium!
• Politics & competition
• Automatisation en printing
• The end
• Links
• Impressum
• Contact

Turn, turn, turn

Introduction | Links | Impressum | Contact |