A tool for inspecting and verifying weld beads in a pipeline includes a plate-like structure which has a surface and edges adapted for inspecting and verifying various weld bead attributes. The easy entry mechanism can be mounted to either an outboard or an inboard side of a seat back frame side member used in seat assemblies for both five-door and three-door vehicle models. In the printer, a CPU permits transfer DMA to be started after reception data as much as the data amount calculated based on the data reception speed and the transfer rate is stored in the buffer to prevent an underrun error from occurring.