Marine timekeeper- ‘H4'
by John Harrison, London, 1555-59

Harrison's fourth timekeeper
Arguably the most important timekeeper ever made, this watch finally solved the Longitude Problem. In recognition of his great achievement, in 1772 Parliament awarded harrison the remainder of the £20,000 originally offered as the Longitude Prize in 1714.

Greenwitch, England, where East meets West

Stradeling east and west below. There was such a line waiting to take a picture toward the marker that we did not wait. Took this picture looking toward the marker.