https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13961545Edit ImageSaveSaveEditCropCustom TextNavigation: various navigational aids, including a quadrant and a sextant. Engraving by Barlow.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 925 x 1200 px | 300 dpiLarge JPEG 2472 x 3207 px | 300 dpiFree DownloadNavigation: various navigational aids, including a quadrant and a sextant. Engraving by Barlow.More