Ìmọ̀-ẹ̀rọ
Ìtọ́nisọ́nà 222 wà
Àwọn Ìtọ́nisọ́nà (222)

Pound Lock
láti ọwọ́ Emma
Àwọn Ẹ̀rọ

Chip Log
láti ọwọ́ Emma
Àwọn Ẹ̀rọ

Gunter's Chain
láti ọwọ́ Mark
Àwọn Ẹ̀rọ

Geneva Drive
láti ọwọ́ Martin
Àwọn Ẹ̀rọ

Planimeter
láti ọwọ́ Mark
Àwọn Ẹ̀rọ

Self-Righting Lifeboat
láti ọwọ́ Emma
Industry 1.0 — Steam & Mechanization (1760)

Pendulum Clock
láti ọwọ́ Martin
Físíkì

Ferris Wheel
láti ọwọ́ Emma
Industry 2.0 — Electricity, Steel & Oil (1870)

Francis Turbine
láti ọwọ́ Emma
Industry 2.0 — Electricity, Steel & Oil (1870)

Owens Bottle Machine
láti ọwọ́ Emma
Industry 2.0 — Electricity, Steel & Oil (1870)

Cyclone Separator
láti ọwọ́ Emma
Industry 2.0 — Electricity, Steel & Oil (1870)

Fourdrinier Paper Machine
láti ọwọ́ Emma
Industry 1.0 — Steam & Mechanization (1760)

Venturi Meter
láti ọwọ́ Penny
Industry 2.0 — Electricity, Steel & Oil (1870)

Arch Centring and Falsework
láti ọwọ́ Emma
Ìhun Igi

Blind Rivet
láti ọwọ́ Emma
Ìmọ̀ Ẹ̀rọ

Metal Electrode Arc Welding
láti ọwọ́ Forge
Iṣẹ́ Irin

Centerless Grinding
láti ọwọ́ Emma
Ìṣelọ́pọ̀ Ìyọkúrò

Building Leonardo da Vinci's Armored Car — The Ancestor of the Tank
láti ọwọ́ Emma
Renaissance (1400–1600)

Building Leonardo da Vinci's Ornithopter — The Flapping-Wing Flying Machine
láti ọwọ́ Emma
Renaissance (1400–1600)

Building Leonardo da Vinci's Revolving Bridge — The Swing Bridge for a Marching Army
láti ọwọ́ Emma
Renaissance (1400–1600)

Building Leonardo da Vinci's Self-Propelled Cart — The First Programmable Robot
láti ọwọ́ Emma
Renaissance (1400–1600)

Building Leonardo da Vinci's Aerial Screw — The Ancestor of the Helicopter
láti ọwọ́ Emma
Renaissance (1400–1600)

Building Leonardo da Vinci's Parachute — The Sealed Linen Pyramid of 1485
láti ọwọ́ Emma
Renaissance (1400–1600)

Casting Reinforced Concrete — Marrying Steel and Stone into the Modern Structure
láti ọwọ́ Balin
Òde Òní