A golf swing plane training device is disclosed that helps the user develop a correct swing plane as well as exercise the muscle groups most effective in imparting maximum power to a golf ball. Attractive fruit is formed that is well suited for processing having uniform yellow flesh that is free from red staining at the pit cavity. After assembly of the interposer to a semiconductor wafer, the wafer-interposer assembly is attached to a testing unit wherein the semiconductor chips on the wafer are tested. When viewed from the first side wall side or the second side wall side, at least a portion of the image carrying member extends beyond a periphery of the first side wall or the second side wall in the extended position.