https://aljazari.trieflow.com/2026-10-07https://aljazari.trieflow.com/img/al-jazari-four-ladle-water-raising-machine-3d.jpg https://aljazari.trieflow.com/quarter-gear-water-raising-machine/2026-10-07https://aljazari.trieflow.com/img/al-jazari-four-ladle-water-raising-machine-3d.jpghttps://aljazari.trieflow.com/img/al-jazari-quarter-gear-water-machine.jpghttps://aljazari.trieflow.com/img/al-jazari-water-raising-machine-manuscript-folio-chapter-1.jpghttps://aljazari.trieflow.com/img/al-jazari-four-ladle-machine-manuscript-folio-chapter-2.jpghttps://aljazari.trieflow.com/img/quarter-wheel-teeth-meshing-runged-wheel.jpghttps://aljazari.trieflow.com/img/four-ladles-lifting-in-turn-a-b-c-d.jpghttps://aljazari.trieflow.com/img/ladle-pouring-water-into-irrigation-channel.jpghttps://aljazari.trieflow.com/img/al-jazari-drawing-vs-3d-model-chapter-1.jpghttps://aljazari.trieflow.com/img/al-jazari-drawing-vs-3d-model-chapter-2.jpghttps://aljazari.trieflow.com/img/al-jazari-machine-power-path-animal-to-ladle.jpghttps://aljazari.trieflow.com/img/al-jazari-gear-missing-three-quarters-of-its-teeth.jpgA Gear Missing ¾ of Its Teeth, On Purpose: Al-Jazari's 1206 Water Machine in 3D3D animation of al-Jazari's quarter-gear water-raising machine and its four-gear upgrade, from the Book of Knowledge of Ingenious Mechanical Devices (1206).https://www.youtube.com/embed/icXwgVAfd0c4302026-10-07T12:30:00+00:00yes https://aljazari.trieflow.com/build-al-jazari-water-machine-model/2026-10-07https://aljazari.trieflow.com/img/al-jazari-quarter-gear-3d-printable-model.jpghttps://aljazari.trieflow.com/img/al-jazari-quarter-gear-paper-model-templates.jpg