Values check is a green plexiglas viewer that you can look through to see your artwork in gray value tones.  It helps in checking your composition and for seeing how your artwork will reproduce in those black and white show catalogues.  It works better than the red, orange or blue viewers because it shows red as a midtone gray. 
                The price: $10.00 per viewer includes shipping costs and a 20% contribution to Society of Watercolor Artists, Fort Worth.
                Send check or money order to:  

                  Colleen Dillon
                  6612 Glade Dr..
                  Arlington, TX 76001-5808
                  Phone 817-375-8989
                  e-mail: -colleen@wedillon.com  

View of the Value Check: