SUCTION PAD AND DEFORMATION MEASURING DEVICE

A suction pad suctions an object under a negative pressure, and includes a stationary section fixable on a support, and a deformable section deformable under the negative pressure. The deformable section includes a plurality of marks at a plurality of positions spaced from one another and displaceable with respect to the stationary section in response to deformation of the deformable section. The plurality of marks are optically identifiable. The plurality of marks are continuous across the plurality of positions or are separate at the plurality of positions.