Versions
Blue
Reference:MG-000499
Case:Three-part, stainless steel
Dial:Blue
Hands:Hand-crafted, hour and minute steel, polished, with white HyCeram filling, subsidiary second stainless steel
Limited 150 watches
white
Reference:MG-000496
Case:stainless steel
Dial:white
Hands:manually crafted, polished steel with white HyCeram filling
grey
Reference:MG-000502
Case:stainless steel
Dial:grey
Hands:manually crafted, polished steel with white HyCeram filling
Pure, the attribute of Grossmann‘s philosophy, also identifies the manufacture‘s steel models. Their hallmark is concentration.
Reduced to the essential functions, the steel case is the perfect reflection of its form. The ATUM model family stands for reduction in perfection.
The dial
The ATUM Pure amplifies the appeal of classic precision measuring instruments. Its single-part dial has a fine brushed texture coated with lacquers of different colours to enhance the subtle metallic effect. The recessed seconds subdial is sharply contoured with a burnished chamfer.
The applied hour markers are particularly plastic and prominent. They contrast brilliantly against the white, grey, and blue dial variants.
The winding crown and the pusher
The gently curved form and the tapered chamfer of the strap lugs enhances the eloquent silhouette of the case.
Aesthetic and functional — the circumferential groove makes it easy to pull out the crown. The pusher for the new handsetting train is set directly below the winding crown.
The hands
Special hands are manually crafted in-house for the ATUM Pure. Designed to match the markers, the lancet-style hands feature straight edges and broad chamfers that contribute to their slender yet corporeal looks.
They are made of stainless steel that retains its remarkable toughness after tempering. To optimise legibility, pockets are worked into the hands and then filled with white “Hy- Ceram“, a compound that consists of ceramic powder and resin. Then, the tips of the hands are precision ground. Finally, they are polished to a mirror gloss, including the white fillings.
Tech Specs
Movement
Manufacture calibre 201.0, manually wound, adjusted in five positions
Special features
Grossmann balance; handsetting override and start of movement with lateral pusher; space-saving modified Glashütte stopwork with backlash; adjustment with Grossmann micrometer screw on a cantilevered balance cock; pillar movement with 2/3 plate and frame pillars in untreated German silver; separately removable clutch winding mechanism; stop seconds for handsetting
Functions
Hours and minutes, subsidiary seconds with stop seconds, Grossmann winder with pusher
No. of parts
187
No. of jewels
20 jewels
Escapement
Lever escapement
Oscillator
Shock-resistant Grossmann balance with 4 inertia and 2 poising screws, Nivarox 1 balance spring
Balance
Diameter 14.2 mm, frequency 18,000 semi-oscillations per hour
Power reserve
42 hours when fully wound
Operating elements
Crown for winding the watch and setting the time, pusher to start movement
Case dimensions
Diameter: 41.0 mm, height: 11.35 mm
Movement dimensions
Diameter: 36.4 mm, height: 5.0 mm
Case
Three-part, stainless steel
Dial
Hand-crafted, hour and minute stainless steel, polished, with white HyCeram filling, subsidiary second steel
Crystal / display back
Sapphire crystal, antireflection-coated on one side
Strap
Hand-stitched alligator strap with prong buckle in stainless steel