Abstract: A moving object thermometer is provided which can precisely measure the surface temperature of a moving (travelling) measurement object, particularly, a small-diameter conductive wire. A first metallic wire 1 and a second metallic wire 2 constituting a thermocouple are disposed on the outer circumferential surface 13 of the disk 11 in the rotary section 10 so as to be inclined toward the shaft center. A thermoelectric force resulting from contact of the metallic wires with a measurement object is converted into an electric signal, which is transmitted through the light emitting diode 31 and passed to the photodiode 32 provided at the stationary section 20 in a non-contact manner. Application of a high frequency current to the stationary side coil 42 provided at the stationary section 20 causes electric power to be supplied in a non-contact manner to the rotary side coil 41 provided so as to be opposed to the stationary side coil 42.

Abstract: A device for marking an elongate material moving along a longitudinal path includes a support with an opening therein for the elongate material to pass through, a holding/releasing mechanism on the support for expanding and releasing an elastic ring onto the elongate material, the holding/releasing mechanism including drive means for releasing the ring, and a defect detection sensor disposed upstream of the holding/releasing mechanism for activating the drive means to release the elastic ring onto the elongated material when a defect is detected therein.