Rite in the Rain Top Spiral Notebook No. 646 (4" x 6") – Universal Pattern (DuraRite Waterproof) The Rite in the Rain No. 646 Top Spiral Notebook delivers true waterproof performance for demanding field conditions where standard all-weather paper may not be enough. Based on the trusted 4" x 6" format, this notebook features the Universal page pattern , providing a flexible layout for structured notes, sketches, and field data collection across surveying, construction, utilities, and inspection workflows. Built with DuraRite waterproof sheets , this notebook is designed to perform even in extreme wet or submerged environments—ensuring your writing won’t wash off or degrade. The rugged Polydura cover protects against scratches and wear, while the top spiral binding allows for easy handling in tight field conditions. As a discontinued model, the 646 offers a unique opportunity to secure true waterproof field documentation in a proven, compact format. Key Features DuraRite waterproof pages for writing that won’t wash off—even in extreme wet conditions Universal pattern pages for flexible and structured note-taking 4" x 6" format for portable, field-ready documentation Polydura cover for durable, flexible protection Top spiral binding for easy use and compact handling Tear-resistant sheets for long-term durability Ideal for surveying, utilities, marine, environmental, and extreme field applications