How late could the key to longitude readings be discovered, and what would be the ramifications of such a delay? 1800? 1850? 1900?
Remember that everyone was using the lunar distance method (which wasn't accurate enough) and it took real out of the box thinking for Harrison to build his machines.
Remember that everyone was using the lunar distance method (which wasn't accurate enough) and it took real out of the box thinking for Harrison to build his machines.