As a tool for writing and observation, Caelograph symbolizes the union between art and science, man and stars. Produced in a limited edition of 3 lines, Caelograph is Caran d’Ache’s tribute to astronomy. Caelograph reproduces the chart, finely engraved on midnight blue Chinese lacquer with delicate silver details that give it a shiny appearance. The upper part of the cap and the writing unit reporting the hour lines that are located on the sundial. The end of the pen is decorated with a compass rose, while the clip is in the form of the compass needle to evoke the eternal bond between navigation and astronomy.