Displayed on Adobe's Almaden Tower, the San José Semaphore displays four wheels at four distinct positions — for a possibility of 256 combinations. The four wheels turn to new positions every 7.2 seconds.
Displayed on Adobe's Almaden Tower, the San José Semaphore displays four wheels at four distinct positions — for a possibility of 256 combinations. The four wheels turn to new positions every 7.2 seconds.