41 educational, training and consulting services in the field of geometric dimensioning and tolerancing (G D and T), namely, providing in-person and online self-paced training programs and courses of instruction in the field of geometric dimensioning and tolerancing (G D and T), providing consulting and mentoring sessions, namely, virtual and in-person classroom group presentation in the field of geometric dimensioning and tolerancing (G D and T), providing educational books, manuals, and course materials in hard copy and electronic format, namely, publication of educational books, manuals and printed course materials, and publishing e-books in the field of geometric dimensioning and tolerancing (G D and T), and providing online non-downloadable educational videos in the field of geometric dimensioning and tolerancing (G D and T)