https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13998020Edit ImageSaveSaveEditCropCustom TextMechanical vibratory treatment : an invaluable instrument for professional use : every facility offered for professional investigation / James Barker.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 1120 px | 300 dpiLarge JPEG 3275 x 3058 px | 300 dpiFree DownloadMechanical vibratory treatment : an invaluable instrument for professional use : every facility offered for professional investigation / James Barker.More