What is Seiko Timegrapher ?
Principle and construction The use of highly effecient quartz crystal plays an important role in the “TIMEGRAPHER”. The exacting signal standard obtained from use of… Read More »What is Seiko Timegrapher ?
machine
Principle and construction The use of highly effecient quartz crystal plays an important role in the “TIMEGRAPHER”. The exacting signal standard obtained from use of… Read More »What is Seiko Timegrapher ?