Omega CALIBRE 2628 Technical Manual page 6

Balance complete with stud
Inertia
Diameter
Balance rim thickness
Pivots
Shock absorber
Rate correction with 1 screw-revolution (on both screws)
Stop lever
Shock-absorber, upper
Shock-absorber, lower
In settings, upper
In settings, lower
OMEGA SA
Differences between versions 2628A and 2628B
2628A (4 Hz)
ref. 7222500B4005021
7.2 (mgcm2)
8.54 mm
0.37 mm
0.08 mm cylindrical
0.09 mm = pivot hole Ø
57 seconds
ref. 722250056070
ref. 722112070530
ref. 722112070531
ref. 722112070640
ref. 722112070641
WORLD SERVICE ORGANIZATION
2628B (3.5 Hz)
ref. 7222500C4005021
9.4 (mgcm2)
8.70 mm
0.45 mm
0.07 mm conical
0.08 mm = pivot hole Ø
86 seconds
ref. 7222500C56070
ref. 7222500C70530
ref. 7222500C70531
ref. 7222500C70640
ref. 7222500C70641
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GT-19-C-006-E - D -2628