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.

Rite In The Rain Transit Polydura Bound Notebook # 300. Rite in the Rain® field books allow you to work efficiently in any weather and still protect your valuable data.

• Protactor ruler w-8 metric scale 1: 1

It may sound simple, but this bound book is really tough. Made from authentic durable outdoor components, the Fabrikoid cover, all-weather paper, and even glue are designed to withstand the elements. The 310F Waterproof Field Book has 160...

Get the same rite in the rain quality with replacement 4-3 / 4 "x 7-1 / 2" blades. Fits No. 200 and No. 210 ring binders. Sold in packs of 100 sheets. size - 4-3 / 4 '' x 7-1 / 2 ''

Ideal for field work performed by professionals in geology and mining. It incorporates sixteen pages of geological information, including: grain size scales, soil classification, geological map symbols, rock classification diagrams, geological...

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...