Wittnauer 242T Matte black Dial Steel ChronographThe decimal scale chronoThis is a very cool and unusual 40mm steel case in superb condition with a decimal scale on the outer edge of the dial. Essentially aimed at scientists, the scale can be used to accurately record percentages units per hour. The matte black dial is in very good condition, with cool sunken registers. The lume hour markers have taken on a lovely rich patina that matches the hands nicely and the cool big bubble centre chrono hand