Grail Watch Reference
A Reference Library for Watches from Grail Watch
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Complications
Chronograph
-2-Button
-Column Wheel Chronograph
--8-Column Chronograph
-Horizontal Clutch Chronograph
-Monopusher Chronograph
Date
-Quick Date Correction
Hacking Seconds
Hands
30 Minute Chronograph Hand at 3:00
Central 60 Second Chronograph Hand
Central Hour Hand
Central Minute Hand
Central Seconds Hand
Date Window at 3:00
Date Window at 4:30
Small Seconds Hand at 9:00
Brand
Longines
Winding
Battery
Hand winding
Regulators
Quartz
Tuning Fork
Production Periods
1930s
1940s
1950s
1960s
1970s
Frequency
170 Hz
8,192 Hz
9,350 Hz
Anti-Shock
Jewels
17
Balance Mount
Balance Cock
-Balance Cock Clockwise
Back-Side Features
-Balance at 12:00
-Battery at 6:00
-Column Wheel at 6:00
-Tuning Fork at 6:00
Beta 21
Longines 13ZN
Longines 6512
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