GeoMax 4-1/2" x 7-1/4" Transit Field Book

GeoMax field books with rain resistant fine quality ledger paper hard-bound in high visibility chrome yellow coated fabric. Also included is an Appendix of 11 tables of conversions, trigonometric functions, and formula for solving right angles and curves. Left hand pages have 4 per inch blue horizontal lines and five red vertical lines. The left page has blue horizontal lines and red vertical lines. The right page has 8 vertical and 4 horizontal blue lines and a red vertical center line.