When it arrived, one edge of the box was crushed in. I went ahead and took it out. Looked it over. There was nothing loose inside. I took the casing off and straightened the base first. Once it was level, I glued the plastic face back together and straightened the outside metal cover. Once it was put together again, I then plugged it in and tried it out. The voltage knob and amperage knob were too deep and loose. I could push the knobs so I could set the current or voltage. I spread the core knobs out on each then filled the plastic knobs with small pieces of electrical tape so I could push the knobs in to the correct settings for my needs. Once everything is set, then to lock in the setting both knobs need the be pushed in at the same time. So far, everything is working great. It wasn’t packed very well for shipping. Only the foam that was in the box was protecting it. It really needs a bigger box for shipping with bubble wrap and more foam around it.