3" X 4" Transparent plexiglass for determining values.
 
Value finders were originally designed for knitters, they were used for determining how light or dark a ball of yarn was. Sometimes color can get in the way of value. The red plastic takes the color out of an object and tells you just how light or dark an object is. Great for landscape painting especially if you have trouble reading greens.
 
Read this article to find out how this item will help you identify the right value.