In astronautics, when building a space station, its parts are separately launched into orbit and assembled there. This requires precise design capabilities and accurate machining of all surfaces where the parts join.
The same is true of the case-in-case structure of MINASE watches.
The case of each MINASE watch is produced by assembling multiple detachable parts, embodying unprecedented, innovative approaches, entailing state-of-the-art cutting and polishing techniques to achieve exactly what is required by the drawings in the order of 1/1,000 mm.