A measuring system includes a first sensor, a second sensor, a first measurement value calculator that, based on a change of an amount of received light that is measured by the first sensor, calculates a first measurement value indicating an index related to a blood oxygen saturation or a blood refill time, a second measurement value calculator that, based on a change of an amount of received light that is measured by the second sensor, calculates a second measurement value indicating an index related to a blood oxygen saturation or a blood refill time, and a pressure controller that controls the first sensor and the second sensor so that a time difference between a start of compression release by the first sensor and a start of compression release by the second sensor is within a predetermined time period.
