NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Museum pieces
From: Bill Morris
Date: 2010 May 10, 22:31 -0700
From: Bill Morris
Date: 2010 May 10, 22:31 -0700
Peter
With a beat of 5 per second, you can time only to the nearest 0.2 of a second, as the hand moves in jerks of that amount. With a 40 beat, you can, in principle if perhaps not in practice, time to the nearest 0.025 second. One tenth is easy to read. The hand of course goes around much faster, so the train was chosen to give one revolution in 10 seconds, which gives nice open graduations.
Bill Morris
Pukenui
New Zealand.
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