https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13998824Edit ImageSaveSaveEditCropCustom TextMeasurement: a scholar making observations of a pendulum, with two servants, one writing at a table. Engraving by J. Basire, 1822, after J. Goldingham, 1821.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 946 px | 300 dpiLarge JPEG 3025 x 2384 px | 300 dpiFree DownloadMeasurement: a scholar making observations of a pendulum, with two servants, one writing at a table. Engraving by J. Basire, 1822, after J. Goldingham, 1821.More