An inkjet printhead and a method of manufacturing the same. The battery unit 4 and the cover 5 are disposed adjacently along the plane of the bottom face of the casing 1. Mounting apparatus pivotally connects the fork portion and the gripping portion to one another to allow movement of the gripping portion within the user’s hand. The stacking line connects together respective gravity center positions of blade cross-sectional surfaces at spanwise positions in a range from a hub cross-sectional surface joined to a rotating shaft or an outer circumferential side casing of a rotating machine to a tip cross-sectional surface lying at a position most remote from the hub cross-sectional surface in a spanwise direction.