"EXAMPLE 6 Production of a Wafer Prober Using Alumina as a Ceramic Substrate [0176] A wafer prober was produced in the similar manner to that in Example 1 except the following matters and conditions. [0177] A composition obtained by mixing 100 parts by weight of alumina powder (Tokuyama Corp., average particle size: 1.5 ??m), 11.5 parts by weight of an acrylic binder, 0.5 part by weight of a disper" . . . .