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    Re: Harrison's H1: app and replica
    From: Hewitt Schlereth
    Date: 2013 Apr 7, 18:15 -0700

    Thanks, Brad. I noticed a mention of "Lignum Vitii" (vitae?). I once read 
    there was a Harrison clock made entirely of wood that is still functioning 
    somewhere in England.
    Sent from my iPad
    On Apr 7, 2013, at 5:32 PM, "Brad Morris"  wrote:
    > Back in 1999, this reproduction was offered at, if I recall properly $100k
    > http://www.antique-pocket-watch.com/sinclair-harding.html
    > On Apr 7, 2013 8:20 PM, "Hewitt Schlereth"  wrote:
    >> ------------------------------
    >> Frank, how I wish I'd been there. Has Drumheller put - or have plans to put - his video on Tube?
    >> Did you perchance take video?
    >> Hewitt
    >> Sent from my iPad
    >> On Apr 7, 2013, at 4:48 PM, "Frank Reed" ** wrote:
    >>> Before yesterday, I did not know that there was an iOS app that displayed 
    a simple virtual animation of Harrison's 1735 clock H1. And three days before 
    that I would not have known that there's a recently-completed serious 
    functioning replica of H1. When it rains time-keepers, it pours time-keepers.
    >>> On Tuesday, I saw a notice for a presentation scheduled for two days later 
    at Mystic Seaport on a fully-functional replica of Harrison's H1 built by 
    Douglas Drumheller. If I had had more notice, I would have invited NavList 
    members. As it happened Herbert Prinz just got back from his sailing trip 
    from the Virgin Islands to the Galapagos, so he was available and also 
    attended. The program was ostensibly about the "Discovery of Longitude" 
    though on this score the presentation was pedestrian. Drumheller did not go 
    beyond a brief recap of some general points found in Sobel's "Longitude" and 
    unsurprisingly he repeated a couple of myths that are also found in that 
    book. I went in fully expecting him to repeat the myth that it took four 
    hours to work the calculations for a lunar. But he exceeded my expectations 
    and stated that it took six hours to work a lunar! The presentation, however, 
    was really just preamble for a discussion of his marvelous creative obsession 
    of the past 15 years: the construction of a working replica of H1. He showed 
    some beautiful photos of it and some fascinating video. It really does 
    function or "go" as clock people say. He hopes eventually to sail it across 
    the Atlantic on a tall ship.
    >>> Meanwhile, I've downloaded the H1 Sea clock app for my iPad. This is a 
    very basic animation. It's essentially a photo of H1 with a few simple 2d 
    animated components. The animation of the rocking pendula is very nice, while 
    the ticking animation of the main gear leaves something to be desired. The 
    sound of the movement is apparently recorded from Harrison's H1 itself, so it 
    has an authentic sound to it. Of course, H1 does not sound the hours with the 
    nautical pattern of bells. That feature is just for fun. The clock is not a 
    3d representation. There is a static perspective view, but this is just a 
    cleaned up photo. The app also includes a video of Jonathan Betts describing 
    H1. He is the true expert these days on Harrison's clocks at the National 
    Maritime Museum. Get a copy of his little book "Harrison" if you don't have 
    it. The app is well worth its price of 99 cents. Good fun.
    >>> -FER
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