This drop tube loading arm assembly is adaptable for loading asphalt into tank trailers at marketing terminals. A wire from the temperature sensor extends to the outside via a through-hole formed in a component of the bearing apparatus, and hence the temperature sensor can be disposed in a desired position with excellent wiring extension flexibility, thereby enabling a temperature in the desired position of the bearing to be measured. By inverting the scaling factor from to 1, this topology retains the distortion cancellation property while balancing the two signal paths. Each element of information in the inventory has a single source and owner. A display module receives coordinate information from the display screen and determines whether the coordinate information corresponds to the active region.