> UPDATED: Line Thickness Reduced for Finer Work Isometric Notebook: Isometric Graph Paper Notebook (1/4 Inch Equilateral Triangle 125 Pages 8.5 x 11). > UPDATED: Line Thickness Reduced for Finer Work Isometric Notebook: Isometric Graph Paper Notebook (1/4 Inch Equilateral Triangle 125 Pages 8.5 x 11)