Robust electronic instrument enclosure made from aluminum die-cast alloy (tough yet easy to machine). The overlapping construction provides protection against dust and splashes, and also ensures improved EMI/RFI shielding. Includes screws that are screwed into factory-threaded holes. The type and number of screws may vary. See details below or in the drawings. The standard versions meet the IP54 protection rating, while the waterproof versions meet the IP65 protection rating and include a gasket. The gasket is supplied loose in the enclosure (not pre-installed).