A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2022; you can also visit the original URL. The file type is application/pdf.
application/pdf
神保 泰雄. "〔620〕光てこを用いた高感度記録R.Jones & J.Richards, J.Sci.Instr., 1959-2, Vol.36, No.2, p.90〜94, 図7." Journal of the Society of Mechanical Engineers 62.488 (1959) 1344