Diagrams in Three Dimensions for Solid Geometry
Chicago: Orthovis Company, 1936. First edition. Box. Box (9 1/2 x 8 1/2 x 1/2"). 1, 15 plates. Original gray paper-covered box with white lettering and ruling on black label on cover. Contains "Ortho-Scope." Aid for students to visualize three-dimensional figures represented by two-dimensional diagrams, providing 3-D-glasses and fifteen technical..... More