The V7 keeps time for all 3 levels of twilight; civil, nautical and astronomical. Each dipping 6 degrees more below the horizon line. The LCD can be set to show a hard line for SR only, or a checkered pattern indicating all 3 levels of twilight.
The V7 keeps time for all 3 levels of twilight; civil, nautical and astronomical. Each dipping 6 degrees more below the horizon line. The LCD can be set to show a hard line for SR only, or a checkered pattern indicating all 3 levels of twilight.