An Arc of twelve ‘Sarcen’ stones in acrylic, light individually, to indicate the ‘hour’, and an ‘Oval’ of acrylic ‘lintel’ stones divided into sixty, indicate the minute.
The inner rings and the ‘Alter’ stone are cut from ‘Spotted Dolerite’ from the Presilli Hills of Wales. (The same location from which the actual monument’s stone was obtained)
The clock’s circuitry is based upon 4.193mhz crystal, subdivided into minutes and hours.
The 72 LEDs are driven from serial shaft registers; – ‘CMOS’ logic is used.
The clock can receive signals from the BT transmitter at Rugby, for seasonal hour change and accurate timekeeping, permanently.
Dimensions: 48″x22′ wall-mounted