Abstract: A torso, around which clothes can be wound, includes a curved incision on the backface. Preferably, an elastic member is provided at least on the periphery of the incision. The torso may also include a first opening on the backface, an elastic member formed to cover the first opening, and a curved incision on the elastic member, where the incision is exposed from the first opening. Preferably, the incision is formed along the longitudinal direction of the first opening. Furthermore, the first opening may include at least two projections formed on its periphery, and the elastic member may include at least two holes formed at positions opposing the projections, respectively. A fixing member may be provided for fixing the elastic member, and the fixing member includes a second opening having the same shape and size as those of the first opening and formed at a position opposing the incision.

Abstract: A state detection device which detects parameters includes a measuring pipe, electrodes, an exciting coil that applies a magnetic field to the fluid, signal lines arranged at angle to the magnetic field such that an electromotive force is generated due to a change with passage of time in the magnetic field, and a state quantifying unit for extracting a ?A/?t component from resultant electromotive forces that are detected at the electrodes and the signal lines and are composed of an electromotive force of the ?A/?t component irrelevant to a flow velocity of the fluid and resulting from a change with passage of time in the magnetic field and an electromotive force of a v×B component relevant to the flow velocity of the fluid, and extracts a variation factor relevant to the parameter from the ?A/?t component to quantify the parameter based on the variation factor.