https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13970320Edit ImageSaveSaveEditCropCustom TextMerlin's mechanical chair for the elderly or infirm: the design incorporates hand-cranks, wheels, gears and an adjustable back and footrest. Coloured etching with aquatint, 1811.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 934 x 1200 px | 300 dpiLarge JPEG 2480 x 3188 px | 300 dpiFree DownloadMerlin's mechanical chair for the elderly or infirm: the design incorporates hand-cranks, wheels, gears and an adjustable back and footrest. Coloured etching with aquatint, 1811.More