Alvin® Level Book 4 5/8" x 7 1/4"
Field book covers are extra stiff, and a high visibility yellow color, completely protected by a waterproof barrier with blind embossing. Pages are white ledger paper specially formulated for maximum archival service, ease of erasure, and protected by a water-resistant surface sizing. 45/8" x 7¼" page size, 80 sheets (160 pages) plus 15 pages of curve tables and practical information. Left page has blue horizontal lines, red vertical lines, six columns. Right page has blue horizontal lines, red vertical lines, six columns.