Abstract: A nonaqueous electrolyte solution includes a lithium salt and a nonaqueous solvent that dissolves the lithium salt. The nonaqueous electrolyte solution contains from at least 0.01 ppm to not more than 100 ppm of a compound represented by the following general formula (1): R1—CR2OR3—CR22OR3??(1) (in formula (1), R1 and R3 represent an organic group having 1 to 10 carbon atoms and optionally having a substituent; R2 represents hydrogen or an organic group having 1 to 10 carbon atoms and optionally having a substituent; and R1 to R3 may each represent the same group or may each represent different groups).

Abstract: A nonaqueous electrolyte solution includes a lithium salt and a nonaqueous solvent that dissolves the lithium salt. The nonaqueous electrolyte solution contains from at least 0.01 ppm to not more than 100 ppm of a compound represented by the following general formula (1): R1—CR2OR3—CR22OR3??(1) (in formula (1), R1 and R3 represent an organic group having 1 to 10 carbon atoms and optionally having a substituent; R2 represents hydrogen or an organic group having 1 to 10 carbon atoms and optionally having a substituent; and R1 to R3 may each represent the same group or may each represent different groups).

Abstract: A length measuring instrument capable of measuring, displaying and recording the length around a part being measured by applying a measuring belt tightly to that part and operating the instrument by single hand. A rotary shaft disposed in a housing is provided with a spiral spring, the measuring belt, and an optical modulating section having a part for regulating the quantity of transmitted light. The belt is drawn out and applied tightly to the circumference of the part being measured. The rotary shaft is rotated forward when the belt is drawn out and rotated reversely by the recovering force of the spring to pull in the belt automatically thus, stretching and tensioning the belt. The light is converted into an optical modulation signal L depending on the rotation of optical modulating section and that signal is converted temporarily into a photoelectric conversion signal before being converted into an electric signal.

Abstract: A length measuring instrument capable of measuring, displaying and recording the length around a part being measured by applying a measuring belt tightly to that part and operating the instrument by single hand. A rotary shaft disposed in a housing is provided with a spiral spring, the measuring belt, and an optical modulating section having a part for regulating the quantity of transmitted light. The belt is drawn out and applied tightly to the circumference of the part being measured. The rotary shaft is rotated forward when the belt is drawn out and rotated reversely by the recovering force of the spring to pull in the belt automatically thus, stretching and tensioning the belt. The light is converted into an optical modulation signal L depending on the rotation of optical modulating section and that signal is converted temporarily into a photoelectric conversion signal before being converted into an electric signal.

Abstract: An aniline polymer having structural Formula I: ##STR1## wherein both n1 and n2 are integers of 2 or more, m is an integer of 0 or more and X.sup.- is any anion. A substance for use in an electrode must be an aniline polymer having preferably two or more serial S--S linkages, such as "S--S--S", "S--S--S--S" and the like, consisting of sulfur. By having such structures, the substance, when used as an electrode active material, serves to improve capacity considerably as compared with other conventional electrode active materials.