From the table of contents = types and usage of tools/soldering techniques; music boxes for telephones; relay test equipment using a 3-pole vacuum tube, etc. /issued S48.3.5 ※ There are threads, light scratches, and dirt overall. There are pickpockets on the four sides of the front and back cover. There are tape marks from the top and bottom of the left side of the cover to the right side of the back cover. There is a dirt of about 6 cm on the back cover, about 2 of them. ~ In consideration of the condition, it is 2 percent off the regular used price.