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 corresponding to a shape of the components, and a second recessed section which is formed in a state in which a recessed section of the same shape as the first recessed section is rotated around an axis perpendicular to the placement section by a predetermined angle and overlaps a portion of the first recessed section , and wherein it is possible to place the components which are held by the first component holding tool in both the first recessed section and the second recessed section , 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 , 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 , 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 corresponding to a shape of the components, and a second recessed section which is formed in a state in which a recessed section of the same shape as the first recessed section is rotated around an axis perpendicular to the placement section by a predetermined angle and overlaps a portion of the first recessed section , and a first recessed section corresponding to a shape of the components, and a second recessed section which is formed in a state in which a recessed section of the same shape as the first recessed section is rotated around an axis perpendicular to the placement section by a predetermined angle and overlaps a portion of the first recessed section , and wherein it is possible to place the components which are held by the first component holding tool in both the first recessed section and the second recessed section , 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 , 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 , the first shape posture and the second shape posture being different. <EOS>