Ryohei ISHIMARU, Naoshi IZUMI. A Study for Measurement of Tooth Profile Error using Contour Measuring Instrument. Proc. of the 6th International BAPT Conference Power Transmissions 2019. 2019. 3. 346-347
Ryohei ISHIMARU, Naoshi IZUMI. Study on tooth profile measurement using contour shape measuring instrument. Proc. of the 8th International Conference on Manufacturing, Machine Design and Tribology, ICMDT2019. 2019. TH-B-3-1
入江 司, 竹之内 和樹, 園田 計二, 和泉 直志, 石丸 良平, 明石 剛二, 森 昭寿, 福永 道彦. 幾何公差をどう教えるか : 日本設計工学会九州支部研究調査事業報告 (特集 図面のグローバル展開). 設計工学 = Journal of Japan Society for Design Engineering : 日本設計工学会誌. 2018. 53. 1. 36-41
Tsukasa IRIE, Kazuki TAKENOUCHI, Keiji SONODA, Naoshi IZUMI, Ryohei ISHIMARU, Koji AKASHI, Akihisa MORI. Approach to Education of Geometrical Dimensioning and Tolerance in University and College of Technology. Proc. of the 4th International Conference on Design and Science. 2017. 1-2