Chartwell pads were originally developed in England by H. W. Peel. The company is known for "specialist" applications such as the Watershed Pads and Survey Books for engineers, surveyors, and scientists who work in tough outdoor environments. The Watershed Pad's synthetic paper is tear resistant and completely waterproof.
The bright covers are easy to wipe clean and spot if dropped or misplaced. They are designed for use in very wet or humid conditions. They can also withstand some chemicals, making it useful for refineries or chemical plants.