Mechanics: various machines. Coloured engraving by J. Emslie, 1850, after himself. https://www.rawpixel.com/image/13961976/image-person-technology-public-domainFree Image from public domain licenseEngineering: large cogs meshing together, and diagrams of epicycloid curves. Colour lithograph by Stanislas Petit, ca. 1905. https://www.rawpixel.com/image/13951560/image-background-paper-cartoonFree Image from public domain licenseEngineering: large cogs meshing together, and diagrams of epicycloid curves. Coloured lithograph, 1905, by Stanislas Petit. https://www.rawpixel.com/image/13968889/image-paper-art-patternFree Image from public domain licenseEngineering: a large cogwheel, front and side elevations. Coloured drawing, 1875, by []. https://www.rawpixel.com/image/13964613/image-background-paper-patternFree Image from public domain licenseMachinery: a steam-driven sugar mill. Coloured drawing, 1823 or 1855. https://www.rawpixel.com/image/13955556/machinery-steam-driven-sugar-mill-coloured-drawing-1823-1855Free Image from public domain licenseClocks: various types of clock mechanism. Coloured engraving by J. Pass, 1809. https://www.rawpixel.com/image/13966283/clocks-various-types-clock-mechanism-coloured-engraving-pass-1809Free Image from public domain licenseMechanics: forces, gears, axles and dynamics, pulleys. Engraving by A. Bell. https://www.rawpixel.com/image/13954170/mechanics-forces-gears-axles-and-dynamics-pulleys-engraving-bellFree Image from public domain licenseFree audio engineering control panel image, public domain CC0 photo. https://www.rawpixel.com/image/5915037/photo-image-public-domain-technology-freeFree Image from public domain licenseVrouw met lange mantel bekijkt enkele prenten (1897) by Theo Van Rysselberghe, veuve Monnom and N Lembrée https://www.rawpixel.com/image/13732365/image-paper-cartoon-faceFree Image from public domain licenseMachinery: plan and elevation of the Smeaton oil mill. Coloured engraving by J. Pass, 1819, after J. Farey. https://www.rawpixel.com/image/13967053/image-technology-public-domain-drawingFree Image from public domain licenseEngineering: driving wheels of a railway locomotive, and section of piston. Coloured lithograph, 1905, by Stanislas petit. https://www.rawpixel.com/image/13967737/image-technology-public-domain-architectureFree Image from public domain licenseA close-up of a black DJI drone in flight. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3286542/free-photo-image-drone-cc0-creative-commonsFree Image from public domain licensePrinting: a three-quarter view of a Bacon & Donkins press, with a detail of the eccentric gearing. Coloured engraving by W.… https://www.rawpixel.com/image/13957931/image-paper-plant-grassFree Image from public domain licensePng cog gear clipart, transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/10097268/png-illustrations-public-domainFree PNG from public domain licenseEngineering: Joseph Clement's constant-speed facing lathe, elevation, plan, and details. Engraving by W. Kelsall after J.… https://www.rawpixel.com/image/13958656/image-paper-pattern-technologyFree Image from public domain licensePNG Human brain, Neural engineering sticker, transparent background. Free public domain CC0 image. https://www.rawpixel.com/image/11728774/png-dog-faceFree PNG from public domain licenseA DJI Phantom drone in flight. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3337393/free-photo-image-drone-aircraft-airlinerFree Image from public domain licenseClocks: a clock face (top), and mechanism (below). Engraving by A. Bell. https://www.rawpixel.com/image/13967670/clocks-clock-face-top-and-mechanism-below-engraving-bellFree Image from public domain licenseClocks: a striking mechanism. Engraving by S. Porter after C. Varley. https://www.rawpixel.com/image/13958809/clocks-striking-mechanism-engraving-porter-after-varleyFree Image from public domain licenseClocks: the plan of a horizontal clock mechanism. Engraving by Benard after L.J. Goussier. https://www.rawpixel.com/image/13968848/image-pattern-technology-public-domainFree Image from public domain licenseEngineering: a large double-chamber steam engine, with a flywheel. Coloured drawing. https://www.rawpixel.com/image/13955990/image-steam-pattern-technologyFree Image from public domain licenseAn engineering lathe mechanism: long section, cross-section, and details. Engraving by G. Gladwin after J. Clement. https://www.rawpixel.com/image/13965274/image-paper-cross-technologyFree Image from public domain licensePrinting: a three-quarter view of a press made by Bacon & Donkins, with a detail of the eccentric gearing. Engraving by W.… https://www.rawpixel.com/image/13953025/image-paper-plant-grassFree Image from public domain licenseDe Land pool. Bits and parts. Old pumps, gears, chains, parts from every kind of machine under the sun comprise Casey's… https://www.rawpixel.com/image/12239823/photo-image-face-paper-handFree Image from public domain licenseFree smartwatch & lens image, public domain digital device CC0 photo. https://www.rawpixel.com/image/5916394/photo-image-public-domain-black-technologyFree Image from public domain licenseEngineering: rolling mill used to produce gun barrels, with different stages in producing the shape shown below. Engraving… https://www.rawpixel.com/image/13963921/image-paper-technology-public-domainFree Image from public domain licenseEngineering: cross-sections of the hammer designed by John Smeaton for use in iron manufacture. Engraving by W. Lowry after… https://www.rawpixel.com/image/13960139/image-paper-cross-technologyFree Image from public domain licenseEngineering: a large cogwheel, front and side elevations. Coloured drawing, 1875. https://www.rawpixel.com/image/13959918/image-background-pattern-circleFree Image from public domain licenseAstronomy: a mechanism for a model of planetary motion. Engraving by W. Kelsall after J. Clement. https://www.rawpixel.com/image/13953590/image-paper-cartoon-artFree Image from public domain licenseCoinage: elevations of a roller. Etching by Bénard after Lucotte. https://www.rawpixel.com/image/13952858/coinage-elevations-roller-etching-benard-after-lucotteFree Image from public domain licenseDe Land pool. La Roe shop. Mrs. Earl La Roe of Eustis, Florida, a grandmother with two sons in the army, doing her daily… https://www.rawpixel.com/image/12239931/photo-image-hand-person-technologyFree Image from public domain licenseCog gear clipart, illustration vector. Free public domain CC0 image. https://www.rawpixel.com/image/10097293/vector-illustrations-public-domain-technologyFree Vector from public domain licenseVintage gear from The Cycle Directory published by Cassell & Co. (1884). Original from the British Library. Digitally… https://www.rawpixel.com/image/561161/gear-cog-vintage-styleFree Image from public domain licenseWrist watch from Cycling in Bengal, A Guide to Practical Tours.. The Official Handbook of the Bengal Cyclists Association… https://www.rawpixel.com/image/561243/vintage-style-wrist-watchFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Installing landing gear on wing parts in a sub-assembly section. Sourced from… https://www.rawpixel.com/image/12304205/image-person-technology-factoryFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Installing landing gear on wing parts in a sub-assembly section. Sourced from… https://www.rawpixel.com/image/12304250/image-person-technology-factoryFree Image from public domain licenseClocks: a striking mechanism. Engraving by J. B. Taylor after C. Varley. https://www.rawpixel.com/image/13993302/clocks-striking-mechanism-engraving-taylor-after-varleyFree Image from public domain licenseEngineering: a sway beam engine and an expansion gear. Lithograph by Martin and Hood, 1852, after C.J. Light. https://www.rawpixel.com/image/14012561/image-paper-cartoon-airplaneFree Image from public domain licenseTwo chuck mechanisms for an engineer's lathe: elevations, cross-section, and details. Engraving by J. Bacon after J. Clement. https://www.rawpixel.com/image/14006702/image-paper-cross-patternFree Image from public domain licensePapeterie Darblay, Essonne, Ile de France: mechanized, shaft-driven paper-making machines attended by workmen. Wood… https://www.rawpixel.com/image/13999357/image-paper-person-technologyFree Image from public domain licenseClocks: plan of a dividing engine for setting out gearwheels. Engraving by Defehrt [after G. d'Heuland]. https://www.rawpixel.com/image/13999121/image-cross-pattern-lightFree Image from public domain licenseClocks: details of a dividing engine for setting out gearwheels. Engraving by Defehrt after L.J. Goussier. https://www.rawpixel.com/image/13998868/image-technology-public-domain-drawingFree Image from public domain licenseEngineering: lifting gear with block and tackle. Engraving by T. Bradley. https://www.rawpixel.com/image/14008872/engineering-lifting-gear-with-block-and-tackle-engraving-bradleyFree Image from public domain licenseClocks: a dividing engine for setting out gearwheels. Engraving by Prevost [after G. d'Heuland]. https://www.rawpixel.com/image/14012582/image-paper-cartoon-plantFree Image from public domain licenseProduction. Pratt and Whitney airplane engines. Magneto driving gears for Pratt and Whitney airplane motors are tested for… https://www.rawpixel.com/image/12307917/image-plant-person-artFree Image from public domain licenseClocks: details of a dividing engine for setting out gearwheels. Engraving by Prevost after L.J. Goussier. https://www.rawpixel.com/image/13987147/image-paper-cartoon-technologyFree Image from public domain licenseProduction. Pratt and Whitney airplane engines. A gear for a Pratt and Whitney engine is tested for hardness on a Rockwell… https://www.rawpixel.com/image/12306999/image-plant-people-artFree Image from public domain licenseTechnology: a door-closing mechanism: long section, cross-section, and details. Engraving by G. Gladwin after himself. https://www.rawpixel.com/image/14002587/image-paper-cross-technologyFree Image from public domain licenseKettle Falls, United States. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3337285/free-photo-image-abies-action-adventureFree Image from public domain licenseMachinery: plan and elevation of the Smeaton oil mill. Engraving by W. Lowry, 1814, after J. Farey. https://www.rawpixel.com/image/14010139/image-paper-light-technologyFree Image from public domain licenseConversion. Pianos to airplane motors. Using the same drill press which once assembled piano parts, this employee of a… https://www.rawpixel.com/image/12307589/image-person-art-planeFree Image from public domain licenseGood men, good machines, good materials mean good gears for the rear axles of halftrac scout cars now being produced for our… https://www.rawpixel.com/image/12306564/image-plant-person-technologyFree Image from public domain licenseTextiles: a trammeling mechanism for threads. Engraving by W. Kelsall after C. Varley. https://www.rawpixel.com/image/14005928/image-paper-cross-patternFree Image from public domain licenseTechnology: a door-closing mechanism. Engraving by J. B. Taylor after C. Varley. https://www.rawpixel.com/image/14012508/image-paper-technology-public-domainFree Image from public domain licenseMangahao Hydro-Electric scheme : 1924 (1924) by Leslie Adkin. https://www.rawpixel.com/image/13029096/mangahao-hydro-electric-scheme-1924-1924-leslie-adkinFree Image from public domain licenseEntre ces trois mon coeur balance (1930) by Samuel Jessurun de Mesquita https://www.rawpixel.com/image/13761895/entre-ces-trois-mon-coeur-balance-1930-samuel-jessurun-mesquitaFree Image from public domain licenseProduction. Pratt and Whitney airplane engines. A gear for a Pratt and Whitney engine is tested for hardness on a Rockwell… https://www.rawpixel.com/image/12308170/image-face-plant-handFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Working on the landing gear of a bomber. Sourced from the Library of Congress. https://www.rawpixel.com/image/12335333/image-face-person-technologyFree Image from public domain licenseEngineering: a large double-chamber steam engine. Coloured drawing. https://www.rawpixel.com/image/13976343/engineering-large-double-chamber-steam-engine-coloured-drawingFree Image from public domain licenseClocks: side elevation of a dividing engine for setting out gearwheels. Engraving by Defehrt [after G. d'Heuland]. https://www.rawpixel.com/image/13992668/image-paper-technology-public-domainFree Image from public domain licenseCamera set flat lay on white background, location unknown, Sept. 28, 2016. https://www.rawpixel.com/image/6112704/photo-image-white-background-public-domain-technologyFree Image from public domain licenseDe Land pool. La Roe shop. Fifty-three-year-old Earl La Roe and his wife, of Eustis, Louisiana, solved one of the De Land… https://www.rawpixel.com/image/12306841/image-face-hand-personFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Compnay. Working on the landing gear of a bomber. Sourced from the Library of Congress. https://www.rawpixel.com/image/12287783/photo-image-person-airplane-technologyFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Working on the landing gear of a bomber. Sourced from the Library of Congress. https://www.rawpixel.com/image/12288058/photo-image-person-airplane-technologyFree Image from public domain licenseNashville, Tennessee. Vultee Aircraft Company. Working on the landing gear of a bomber. Sourced from the Library of Congress. https://www.rawpixel.com/image/12287767/photo-image-person-airplane-technologyFree Image from public domain license