Chromaline's Exposure Calculator eliminates miscalculated exposure time with three kinds of quality checks. An easy, user friendly tool for the novice and the advanced screen maker. Designed to help determine correct exposure time, print quality check and halftone tests. Instructions are easy to understand and very complete.
Bottom Line: At least 90% of stencil failures can be traced back to exposure times. For under $30, this little tool could save you hours of frustration!