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)

This is part 3 of a three-part series about Derek Pratt’s reconstruction of John Harrison’s Longitude Prize-winning H4, which was the world’s first precision marine chronometer. This article was first published in ‘The Horological Journal’ (HJ) in April 2015, who we thank for graciously granting permission to republish on Quill & Pad.

7 years ago

The Life And Times Of Legendary Independent Watchmaker Derek Pratt

Derek Pratt (1938 – 2009) was perhaps one of the most “complete” watchmakers of our time along with his friend George Daniels. The Swiss-based Englishman firmly was behind and part of many watches and projects that are today common knowledge, while his own name remains relatively hidden.

7 years ago