Here is a timeline of Inventions in the Ard Marjhoola world, starting from its POD.
For a timeline of events, see Timeline of events.
Italics lists OTL inventions at the same time they are invented in this timeline.
900's: Banknotes in China
900's: Firelance in China
900's: Milling Factory in Abbasid Caliphate: Baghdad
900's: Cartographic grid in Abbasid Caliphate: Baghdad
900's: Graph paper in Arab world
900's: Horizontal-axle windmill in West Asia
900's: Timekeeping astrolabe in Persia
904: Fire Arrow in China
919: Double-piston flamethrower in China
952: Fountain pen invented in Fatimid Caliphate
984: Pound Lock in China
992: Astronomical sextant in Persia
993: Geared mechanical astrolabe in Persia