horological science

:: documents by David Heskin

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    SLEEPING IN OBLIVION - John "Longitude" Harrison's Forgotten Masterpiece - David Heskin - Soptera Publications

  • David Heskin's Website

  • Review of "Sleeping in Oblivion"

    Review by Fortunat Mueller-Maerki

  • Article from HSN 2011-2

    How many teeth should a healthy grasshopper have?

  • Documents available on the downloads section of David Heskin's website

  • PERFECTING THE SINGLE PIVOT HARRISON GRASSHOPPER ESCAPEMENT :: New version September 2012

    COMPUTER AIDED DESIGN of HARRISON TWIN PIVOT and TWIN BALANCE GRASSHOPPER ESCAPEMENT GEOMETRIES :: New version September 2013

    A "TRANSLATION" OF HARRISON'S CSM

bob holmström - www.hsn161.com