Back in 2017 we ran a fascinating three-section arrangement chronicling the creation of Derek Pratt’s H4 reproduction by Roger Stevenson, boss watchmaker at Frodshams. These articles were first distributed in the The Horological Journal (HJ) in February 2015 and we express gratitude toward them again for consent to republish here on Quill & Pad.
I thought it well worth causing you to notice this arrangement by and by on the off chance that you missed it the first run through around.
To see each staggeringly investigated and luxuriously showed a piece of the arrangement, click the connections below.
Derek Pratt’s Reconstruction Of John Harrison’s H4, The World’s First Precision Marine Chronometer (Part 1 of 3)
Making The Diamond Pallets For Derek Pratt’s Reconstruction Of John Harrison’s H4, The World’s First Precision Marine Chronometer (Part 2 of 3)
Making The Escapement, Remontoir, And Timing For Derek Pratt’s Reconstruction Of John Harrison’s H4, The World’s First Precision Marine Chronometer (Part 3 of 3)
You can purchase a DVD of the film about Derek Pratt’s H4 remaking at www.bdvideos.co.uk/site/shop/horology/a-definite investigation of-h4/(all benefits go to the foundation Prostate Cancer UK.)
For more data, kindly visit www.frodsham.com/harrison-h4 .
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The Life And Times Of Legendary Independent Watchmaker Derek Pratt
Burgess Clock B, The World’s Most Precise Pendulum Clock, Is Made To A 250-Year-Old Design By John Harrison, Longitude Prize Winner And Inventor Of The Marine Chronometer
Discovering The Secret Of Life With David Walter: Watches, Clocks, And DeeDee’s Tourbillon
Struthers & Co. Watchmakers’ Project 248