A reversible control rod mechanism adapted for selectively and repeatedly rotating a shaft bidirectionally and thereby moving an attached load bidirectionally. A sequence of measurements of the blood glucose level is applied during a day, the sequential measurements are repeated during a predetermined time period from several days to several weeks, and measured data are collected. One of the tool changing positions is selected in advance for changing the tools next time. The EUV reflective mask reduces unnecessary exposure of resist formed on a substrate to reflected light from the region outside the mask pattern region and reduces a pattern size to produce an accurate transfer pattern. The medicament, such as a vaso-dilator, is delivered either separately or mixed with the chilled fluid, through a very small exit port in or near the heat transfer element. Amplifiers amplify signals obtained from the bolometers.