marine chronometer

In the 19th century the town was known for its pocket and marine chronometers.

The book remains the authoritative work on the marine chronometer.

The method was used for some time during the 18th century, before the introduction of the marine chronometer.

Certainly some marine chronometers used this balance, but none have survived.

John Harrison created the first highly accurate marine chronometer in the mid-18th century.

John Harrison produced the first precise marine chronometer in 1761.

He was the first to use a marine chronometer to determine longitude.

A more convenient method depended on the development of the marine chronometer.

The rate of a mechanical marine chronometer is sensitive to its orientation.

The marine chronometer was invented by John Harrison in 1730.

In this way ships in the bay were able to check their marine chronometers.

He was testing whether or not a marine chronometer could be used on a long voyage to determine longitude.

Slightly later, John Harrison would successfully build marine chronometers from 1730.

John Harrison (1693-1776) was a clockmaker who designed and built the world's first successful marine chronometers.

The English watch and the marine chronometer of around 1810 and 1820 are among the most beautiful things of their kind ever made.

Marine: Based on the marine chronometers used in navigation.

Marine chronometers, the most accurate portable timepieces, often have only 7 jewels.

One was his first marine chronometer project.

The lunar distance method was used by mariners either in conjunction with or instead of the marine chronometer.

Anthony noticed too late that the ship's marine chronometer was broken, so he had to rely on his own skills for navigation.

He himself created a marine chronometer positioned on gimbals and within a vacuum, but it was a failure.

There are currently 2 known examples of the 18K Marine Chronometer in private hands.

John Harrison is given an award from the longitude prize to continue his work on development of a stable marine chronometer.

Marine chronometers with this type of balance had errors of only 3-4 seconds per day over a wide temperature range.

Fleurieu was the Maritime Minister and invented an early marine chronometer.