This compass is believed to have been used by John William Billiatt on the successful 1861-1862 expedition with John McDouall Stuart across Australia, from Adelaide to Chambers Bay, east of the present site of Darwin.
Carpenters, tailors, bakers, carriers, cordwainers and coachmakers had formed unions within ten years of European settlement of South Australia, and by the 1870s there were thousands of union members in the colony.