What is the meaning of the phrase make the 690?

What kind of machines are used to make jewelry? What exactly is a tig torch used for? What is the Difference with a fillet weld and groove weld? How do you make paper sculpture? How do you make neo flies? How do you use a rasp safely? How do you install towel bar on hollow core door? Can you fix floor boards with lost head nails? What drill bit do you use to make hole in electrical outlet box? Should I varnish new wooden blinds? How is premium plywood different from cheap plywood? What is the size of a 720 square foot house? Why would you use half brick walling? Which bathroom hardware is the best? How do rubber bands make different volume? What color does teal and blue make? How much does asphalt milling cost? What does a rebar fabricator do? What do you call a hammer with a large wooden or rubber head? Are sealy sofas well made?