Who could know? There is almost no information about that SainSmart USB scope in the ad, and we don't know what you are likely to encounter. It is not cheap, either.
There is, however, this fascinating and enticing material in the SainSmart scope ad:
Sheet metal is metal formed by an industrial process into thin, flat pieces. It is one of the fundamental forms used in metalworking and it can be cut and bent into a variety of shapes. Countless everyday objects are constructed with sheet metal. Thicknesses can vary significantly; extremely thin thicknesses are considered foil or leaf. Within 1mm thickness sheet metal outer skin, the DDS oscilloscopes are effective in electromagnetic noise suppression and shielding.
A binding post is a connector commonly used on electronic test equipment to terminate (attach) a single wire or test lead. They are also found on loudspeakers and audio amplifiers as well as other electrical equipment. A binding post contains a central threaded metal rod and a cap that screws down on that rod. The cap is commonly insulated with plastic and color-coded: red commonly means an active or positive terminal; black indicates an inactive (reference or return) or negative terminal; and green indicates an earth (ground) terminal.