A component supply device comprising: a component support section which is configured to support multiple components in a scattered state, the components being supported at least in a first posture and a second posture; a first component holding tool which is configured to hold a component which is supported by the component support section; a first moving device which causes the first component holding tool to move to a given position; and a placement section on which the components which are held by the first component holding tool are placed in a lined up state, wherein the component supply device is configured to supply the components in the state of being lined up on the placement section, wherein the placement section includes a first recessed section (496, 526) corresponding to a shape of the components, and a second recessed section (498, 528) which is formed in a state in which a recessed section of the same shape as the first recessed section (496, 526) is rotated around an axis perpendicular to the placement section by a predetermined angle and overlaps a portion of the first recessed section (496, 526), and wherein it is possible to place the components which are held by the first component holding tool in both the first recessed section (496, 526) and the second recessed section (498, 528), wherein the component in the first posture is held by the first component holding tool such that a bottom shape of the component defines a first shape posture of the component, the first shape posture matches the shape of the first recessed section (496, 526), and the component in the second posture is held by the first component holding tool such that the bottom shape of the component defines a second shape posture of the component, the second shape posture matches the shape of the second recessed section (498, 528), the first shape posture and the second shape posture being different. a component support section which is configured to support multiple components in a scattered state, the components being supported at least in a first posture and a second posture; a first component holding tool which is configured to hold a component which is supported by the component support section; a first moving device which causes the first component holding tool to move to a given position; and a placement section on which the components which are held by the first component holding tool are placed in a lined up state, wherein the component supply device is configured to supply the components in the state of being lined up on the placement section, wherein the placement section includes a first recessed section (496, 526) corresponding to a shape of the components, and a second recessed section (498, 528) which is formed in a state in which a recessed section of the same shape as the first recessed section (496, 526) is rotated around an axis perpendicular to the placement section by a predetermined angle and overlaps a portion of the first recessed section (496, 526), and a first recessed section (496, 526) corresponding to a shape of the components, and a second recessed section (498, 528) which is formed in a state in which a recessed section of the same shape as the first recessed section (496, 526) is rotated around an axis perpendicular to the placement section by a predetermined angle and overlaps a portion of the first recessed section (496, 526), and wherein it is possible to place the components which are held by the first component holding tool in both the first recessed section (496, 526) and the second recessed section (498, 528), wherein the component in the first posture is held by the first component holding tool such that a bottom shape of the component defines a first shape posture of the component, the first shape posture matches the shape of the first recessed section (496, 526), and the component in the second posture is held by the first component holding tool such that the bottom shape of the component defines a second shape posture of the component, the second shape posture matches the shape of the second recessed section (498, 528), the first shape posture and the second shape posture being different.