Housings of metal and/or plastic being housing enclosures specially adapted for use with electrotechnical and electronic devices, namely, housings for laboratory instruments and apparatus for the exchange of substances and heat, housings for programmable logic controllers, housings for electric control panels, housings for lighting control panels, housings for photometers, housings for ammeters, housings for DC potentiometers, housings for inclinometers, housings for temperature meters, housi...