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.

Protractor W-43 Ruler Metric Scales 1: 500 AND 1: 1000

These are the loose sheets that professionals use. Special 6-groove round punches fit Rite in No. 200 (43455), No. 9200 (49440), and No. 9200T (49441) Rain Ring Binders. 4-5 / 8˝ x 7˝ sheet size. Pack of 100 sheets.

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...

This new edition is a revision of the previously published Geological Society of America (GSA) Rock Color Chart prepared by the Rock Color Tables Committee. Included are 115 color chips with Munsell's numerical designation to identify the rock...

Get the same rite in the rain quality with 4-5 / 8 '' x 7 '' replacement sheets that fit No. 200 and No. 210 ring binders.

• Protactor ruler w-8 metric scale 1: 1

Universal Pattern, Yellow PolyDura Cover, 50 Sheets (100 Pages). Waterproof paper: 100 pages / 50 sheets per pocket notepad. All-weather paper doesn't get wet when wet and repels water, sweat, grease, mud and will even survive accidental...