Martin Universal 16"x21" Sun-Catcher Tracing Board: The Sun-Catcher tracing board provides a translucent surface which can be easily back-lit for tracing and drawing. The Sun-Catcher Tracing Board is equipped with a sophisticated adjusto-stand with various angle adjustments and a clip to hold artwork. Back light may come from a variety of means: a small lamp, sunlight from a window etc. Stand color may vary. Usually ships in 2-3 business days!