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Grain Size Card

Grain Size Card

Regular price $7.95 USD
Regular price Sale price $7.95 USD
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The Brunton Grain Size Card is an essential field geology reference tool for the visual classification of sediments by size and shape.  Lightweight and durable, this card can easily slide into a field pouch, vest, wallet, or pocket so it can be referenced whenever and wherever needed.  

Grain Size Card Manuals and Videos

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Details for Grain Size Card


• Waterproof, durable, lightweight card can handle exposure to any type of weather.

• Transparent card stock with both negative and positive sides for easier reading and comparing grain size in the field.

Card data:
• 10 grain size classifications including phi scale
• Grain shape reference
• Millimeter ruler


• DIMENSIONS: 2.5 x 3.675 x 0.06 in | 6.35 x 9.33 x 0.2 cm
• WEIGHT: 0.2 oz | 6 g


"Needed a new grain sizing reference for field work. Found the clear one Brunton offers, I like the size and durability of it, great quick reference when in the field."
- Lowell A. 9/14/22

"This product arrived quickly and was of good quality, as has been my experience with Brunton in general. Their proactive customer care is a refreshing pleasure."
- Peter A. 4/11/22