Borosilicate glass, 7mm thick
30mn time [+/- 2mn]
Medium size 240 x 200mm. 0.6mm silver-plated stainless steel nanoballs: 3.5kg / 3'977'260 pieces average
Fine Silver (999.9/000) coated on nanoballs: 35.-grs average.
Hourglass gross weight : 6.0Kgs average.
Marc Newson signature