In various parts of Europe and the Mediterranean, the palm is an ancient unit of measurement used by stone workers and tradesmen. This age-old term is equal to the width of a worker's hand. The makers of our pizza oven still use this measurement to size their ovens today. Our pizza oven was built by master craftsmen in Naples, Italy. Since 1892 they have been building wood-fired ovens, constructed specifically for the cooking of true Neapolitan pizza.