A finely engraved square slate sundial signed Rich.D MELVIN maker LONDON engraved for latitude 51°31° North, with central compass rose and gnomon, the inner ring divded into hours, the middle ring has the names of seventy towns and cities world wide, the outer ring incorporating a further 4 dials and gnomons for New York, Isle of Borneo, Alexandria and New Zealand (all replacement gnomons) - 14in.(36cm)wide