Pewter whale oil lamp clock

This whale oil lamp clock is made from pewter. The roman numerals marked 1 to 12 on the pewter strap served as a clock. Whale oil burned at a very steady rate, very brightly and with little smoke. Because whale oil burned so evenly, it could be depended on to keep time. For each hour the whale oil burnt in this clock, the oil lowered to the next marked level.