A method and system obtains precise survey-grade position data of target points in zones where precise GPS data cannot be obtained, due to natural or man-made objects such as foliage and buildings. The comparison relates to the length of the path traveled at a time t in the plane of the variables with respect to an initial point at time t0, for each layer participating in the thin-film structure. The metallic fishnet exhibits at least one acute V-shaped cross-sectional feature between at least one adjacent pair of the voids. As fluid enters the housing, the shaft rises in lockstep with the fluid level causing the first ring to be pushed downwardly on the shaft and when the fluid level falls, the shaft falls causing the second ring to be pushed upwardly along the shaft. If noise is detected, the manner in which the cardiac signal is acquired, or the manner in which the device operates in response to the acquired cardiac signal is altered to reduce the risk of erroneously detecting noise as a heart depolarization and, therefore, inappropriately triggering or withholding therapy. When the state detecting section detects a change in the state of the image forming apparatus and the data detecting section fails to detect print data in the image forming section, the controller causes the image forming apparatus to enter the power saving mode.