“Zenkoku Tetsudou Ryokou” 全国鉄道旅行 (National Railways & Subways) Shobunsha Publishers, Tokyo, 2018 is an example of technical Japanese in my opinion.
“Railways and Subways have essential basic maps requiring kanji reading.
Map reading is the kind of thing “Basic Technical Japanese”, 1990 as a reader to supplement learning essential kanji.
Robert Byron Bird (born 1924, died 2020, lived 96 years) was an American chemical engineer and professor emeritus at the University of Wisconsin-Madison. Foreign language study for engineers and scientist was one of Robert Byron Bird’s contributions as an educator.
Edward Daub, Robert Byron Bird & Nobuo Inoue, “Basic Technical Japanese”, 1990 was a textbook Japanese reader. In the engineering and science community the text was well-received.