This transparent grain size card is durable and allows you to accurately determine grain size. It also has references for grain shapes and sorting. Perfect for field geologists or those in the lab.
1x SciOptic Grain Size Chart
- Grain size from very fine to gravel
- Grain Shapes
- Grain sorting
- Millimeter scale ruler
- WARNING: CHOKING HAZARD – Product contains small parts. Not suitable for children under 3 years.
- WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.