![john harrison longitude clock h1, h2, h3, h4 - Google Search | Antique clocks, Unusual clocks, Old clocks john harrison longitude clock h1, h2, h3, h4 - Google Search | Antique clocks, Unusual clocks, Old clocks](https://i.pinimg.com/736x/03/34/73/0334737ba128fcac67c9e63295f025ef--skeleton-clock-john-harrison.jpg)
john harrison longitude clock h1, h2, h3, h4 - Google Search | Antique clocks, Unusual clocks, Old clocks
![Harrison's H-4 was based on a pocket watch made by John Jefferys and given to Harrison in 1753 even though, according to Sobel, it “ha… | Watches, Schepen, Horloges Harrison's H-4 was based on a pocket watch made by John Jefferys and given to Harrison in 1753 even though, according to Sobel, it “ha… | Watches, Schepen, Horloges](https://i.pinimg.com/474x/ca/7a/0e/ca7a0eb04aed016320f661bbe65afa7d--marine-chronometer-john-harrison.jpg)
Harrison's H-4 was based on a pocket watch made by John Jefferys and given to Harrison in 1753 even though, according to Sobel, it “ha… | Watches, Schepen, Horloges
![JOHN HARRISON 1693 1776 English horologist inventor reloj marítimo maker longitude cronómetro diccionario Imperial de universal Fotografía de stock - Alamy JOHN HARRISON 1693 1776 English horologist inventor reloj marítimo maker longitude cronómetro diccionario Imperial de universal Fotografía de stock - Alamy](https://c8.alamy.com/zoomses/6/90c025f8b0ff4991a50425da54eb1612/amh4fr.jpg)