Date   
Clock or anemometer? By Eric Scace · #812 ·
Australian 3/4 Seconds Synchronome By Eric Scace · #652 ·
Timing data for Synchronome # 2177 By Eric Scace · #629 ·
Timing data for Synchronome # 2177 By Eric Scace · #611 ·
vacuums and tank clocks By Eric Scace · #498 ·
vacuums and tank clocks By Eric Scace · #493 ·
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