Abstract: A thermocouple is provided that can measure a temperature of a material in a high temperature range of 1500° C. or higher with high accuracy at low cost. The thermocouple includes a first conductive member and a second conductive member. The first conductive member and the second conductive member are connected to each other to form a temperature sensing junction. The first conductive member contains a first conductive ceramic containing zirconium diboride and/or titanium diboride silicon carbide, a sintering agent, and unavoidable impurities. In the first conductive ceramic, the content of the silicon carbide is 5 mass % or more and 40 mass % or less. The second conductive member contains a second conductive ceramic containing boron carbide as a main constituent material.

Abstract: A lead bushing (1) is mounted on a terminal post (7) in a terminal socket (6a) of a storage battery top wall (6). The lead bushing (1) is a hollow tube (2) that is completely closed at one end by an end wall (3), whereby external welding of the terminal post (7) to the bushing is avoided.