Key features:

• Works best with a pencil or all weather pen (sold seperately)
• Imperial & metric rulers, conversion table, map scale
• Universal pattern page: ruled with feint vertical lines
• Impact-resistant Wire-O top spiral binding
• Waterproof

Tech specs:

• Rite in the Rain product number: 146
• 100 pages (50 sheets)
• Sheet size: 10 x 15cm
• Weight: 87g