This kit includes the mmArc Compass, a mechanical pencil, and scientific calculator needed to get started with RS2 Level G when coming from RS2 Level F. Get the RS2 Geometry Set Short with your Level G or H Book Bundle and you are all set to start learning the RightStart way! Note: If you do not already own the RightSt Sonlight resource: https://www.sonlight.com/products/rightstart-geometry-set-short