There are many granulometric scales in use, but the Udden-Wentworth scale (commonly known as the Wentworth scale) is the most widely used in geology.

Size - 36 in x 500 ft roll weight - 33.25 lbs. Patented large format rite in the rain xerographic paper for drawings and specifications. No more laminating your important documents to use on your project. All weather paper.

While a pencil works great with rite in the rain products, sometimes a pen is needed. Don't worry about running out of ink, refills will accommodate all models of rite in the rain pens.

Field resistant PolyDura covers. Chromium, rust resistant metals. Transparent storage pocket. Holds standard 4-5 / 8 ”x 7” cut-sheet paper with six rings.

The Industrial Planner in aluminum is exclusive and resistant, designed and manufactured by Synergy Supplies . With leather case for rulers and 10 compartments for pens.

Ian McCluskey, director of “Les Voyageurs Sans Trace” captured 31 days of scenic beauty in Wyoming and Arizona. As important as his camera, Ian had brought with him a Rite in the Rain Pen and Journal. Constantly wet and covered in mud, he...

Copy or laser print your own all-weather forms, tables, maps, and worksheets onto patented Rite in the Rain 8 1-2 x 11 weather copier paper. Now you can have the convenience of using your existing data sheets on paper that can survive in any...

Field desk for geologists and professional explorers. Stores 8 1/2 x 11 in. Sheets (up to 200 sheets), pencils and other field equipment inside the durable polydura plastic housing. With a warmer feel than a conveniently lightweight and...