Set of 2 books Product HighlightsHigh-visibility Yellow Hard Cover4-1/2" x 7-1/4"80 Sheets - 160 PagesWater-resistant ledger paperThe Left page is level ruled. The Right page has 8 vertical and 4 horizontal blue lines and a red vertical center line. Appendix of 11 tables of conversions, trigonometric functions, and formula for solving right angles and curves. Hardback cover, 80 leaves, page size 4 1/2” x 7 1/4”. 80 Sheers (160 pages)50% cotton rag content paperFine quality water-resistant ledger paperHardbackSize: 4-1/2" x 7-1/4"Left Page: 6 ColumnsRight page: 8 x 4 Grid