Text:

John Harrison’s Manuscripts and Drawings

These images (and more) are available from The Bridgeman Art Library.

Click on the images below to see more detailed information, on the Bridgeman Library site.

Diagram of timekeeper movements

Diagram of timekeeper movements

Fig 5 Gridiron pendulum designed for the construction of precision long case clocks. Fig 6. two inter-connected bar shaped balances with balance springs, proposed for the portable longitude timekeeper or "sea clock"

Fig 5 Gridiron pendulum designed for the construction of precision long case clocks. Fig 6. two inter-connected bar shaped balances with balance springs, proposed for the portable longitude timekeeper or “sea clock”

Instrs assemble H3 106111

Instructions for the assembly of JH’s H3 timekeeper

Design for the lesser watch mentioned by JH to the Board of Longitude on 19 June 1755, taken from a set of mechanical notes and drawings compiled by JH and son William

Design for the lesser watch mentioned by JH to the Board of Longitude on 19 June 1755, taken from a set of mechanical notes and drawings compiled by JH and son William

A page of instructions for the assembly of H4

A page of instructions for the assembly of H4

Another page of instructions for the assembly of H4

Another page of instructions for the assembly of H4

The movement of H4

The movement of H4

Drawing of the layout of the movement of H4

Drawing of the layout of the movement of H4

Design for a large enamel watch dial

Design for a large enamel watch dial

Two designs for large enamel watch dials

Two designs for large enamel watch dials, from mechanical notes and drawings compiled by John Harrison (1693-1776) and his son William (c.1726-72)

These images (and more) are available from The Bridgeman Art Library

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2017: an outstanding year for horology students

Each year, the George Daniels’ Educational Trust (GDET) provides financial assistance to students and apprentices who are training to become watch or clock makers. For 2017, the exams are now over. Click here to read about some of the outstanding results that have been achieved.

George Daniels Lecture 29 Nov 2017

The George Daniels Lecture 2017, "The story of the marine chronometer and the National Maritime Museum’s collection", given by Jonathan Betts, will be held at City University, London on Wednesday 29 Nov 2017 at 1830. Admission is free.

Antiquarian Horological Society (AHS) Lectures

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