The Scalegraph Tour Auto limited edition displays many racing inspired details, such as the "Big Eye" sub-counter layout. This particular design stands out as a proper motorsports feature from the seventies; it was a way to make the minute sub-counter more legible in racing conditions.
The various blue hues on the dial as well as the minute sub-counter colors are also an homage to the original color scheme of the Tour de France Automobile. Some other new details of the Scalegraph are moree subtle, such as this concentric index line connected to Luminova dots on the railway, an important part of its new visual language.