Abstract: A drafting board includes a base, a shoulder formed in the perimeter of the upper surface of the base, a magnetic board engaged in the shoulder of the base, two holes formed in the bottom surface of the base, and a rod engaged in each of the holes of the base for elevating the upper edge of the base. The upper edge is located higher than the lower edge and the base is supported by the rods in a sloped fashion.

Abstract: An entirely uniformly heated responsive cooker comprising an inner pot and an outer pot, wherein the inner pot neither directly touches the heating source nor the wall portion of the outer pot by means of exhalation valve means capable of adjusting proper pressure and thermal energy existing in the outer pot according to the cooking requirements of different foods, resulting in the food in the inner pot being entirely and evenly heated by thermal energy so that the cooking time is reduced, safety is ensured, and the original flavor of food is preserved to effectively achieve the object of energy-saving and economy.