https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13964329Edit ImageSaveSaveEditCropCustom TextNavigation: a sextant, and detail of the cursor. Engraving, 1768.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 805 px | 300 dpiLarge JPEG 3307 x 2219 px | 300 dpiFree DownloadNavigation: a sextant, and detail of the cursor. Engraving, 1768.More