The 200mm Diameter Vegetable or Vegie sieve is a fine mesh sieve, with wooden handle, used to wash and sieve sample chips normally over a Plastic Bucket. They also allow geologists to be able to clearly identify the rock types when clean and washed.
For those wanting that extra longevity out of the sieves, a lot of Geo's and Fieldies like to use the Double Mesh Vegie Sieve. This simple has a reinforced layer of mesh around the outside supporting the standard single layer mesh meaning the sieve is more durable.
Note: These are also referred to as Field Sieves or Vegetable Sieves.