A pocket chronometer found in an abandoned boat with two skeletons at Erebus Bay, King William Island, in May 1859 by the McClintock Search Expedition 1857-59. It was issued to HMS Terror in 1845.
Lieutenant John Irving wrote to his sister Kate on 10 July 1845 'I have charge of our chronometers, which are little clocks. I have to wind them up and compare them, and write an account of their goings on - there are ten of them in each ship'.











