two-bowl decanter that can hold two liquids at once.Principle of operation :one opening of the upper lid coincides with two openings of the lower lid one at a time.Allowing only one liquid to flow at a time and this by turning the upper lid 30° to the left or to the right.Two flats of 0.5 mm thick and rounded on one side facilitate the assembly and the coincidence of the holes.Three flats of the upper cover and three flats of the lower cover facilitate :

• on the one hand the assembly of the first with the second.
• on the other hand do not let the first one disassemble with the second one during use.
• a clearance of 0.2 mm between the flats of the first with the flats of the second facilitates the turning of 30 °.The materials usedparts that make up the entire decanter:thermosets and heat treated glassThe parts that make up the decanter :a red upper lid, a white lower lid, two red filters, two dark glass bowls, a rubber assembly support.design of the decanter executed with adjustment of the parts and the intervals of tolerances less than 0.02mm.Working time 80 hours.