After years of precursory surveying, debate and proposals the most ambitious civil engineering project of the day, the Overland Telegraph Line, began construction in September 1870. Superintendent of Telegraphs, Sir Charles Todd led the construction through “terra incognita,” guided by the precursory surveys of John McDowall Stuart and technologies such as his prismatic surveying compass. The unknown and hostile landscape claimed the lives of several men and scores of transport animals in the dogged pursuit of telegraphic connection to the rest of the world. Completed in August 1872, the Line connected Australia to the world via telegraph wires running 3,200 kilometres from Port Augusta in South Australia, to Darwin, then connecting via submarine cable to Java and beyond. The “earth [had been] girdled with a magic chain” according to the then Governor of New South Wales, Sir Hercules Robinson. How does it work? For use in surveying, the sight vane and prism are turned up on their hinge and the instrument is held horizontally either in the palm of one's hand or on a tripod. Two small discs of red and green glass attached to the prism can be flipped down over the sight line to reduce glare. The objective is to bring the subject into the sightline created by the prism, aligning with the thread of the sight-vane until the subject is bisected evenly. Once aligned, the division on the card may be read through the prism. This reading provides the magnetic azimuth, used for calculating the bearings of distant landmarks. Circular instrument mounted in a brass case with glass window and brass lid. The compass card face four black compass points printed on mint green paper; on the underside the magnetic needle would be affixed, all held in place by a brass knob at the centre. The arched labels of "Sawtell" and "Adelaide" and the Prince of Wales feathers appear to have been affixed with adhesive which has since yellowed in the areas of application on the compass card. The compass face is printed with numbers, every 10 degrees from 10 - 360, printed in reverse indicating this compass would have once held a mirror at the sighting bracket. On one side of the brass case is a brass hinged sighting-prism, possibly of ebonite. The sighting-prism is mounted in a hinged brass bracket on one edge of the brass case. It has two flip-type filter glasses (red and green) and folds down into a retracted travelling position. A hinged brass bracket on the opposite edge would have held the sighting bracket - carrying the sighting vane and mirror - which is now missing or removed. Under the hinge is a lever, possibly related to the movement of the bracket. Underneath the brass case is an indented circle with screw threads, possibly for attachment to a tripod, and indistinguishable marks scratched into the surface.Etched on to the centre of the lid, "Sawtell ADELAIDE / No 792." Affixed to the paper compass face, possibly from separate pieces of paper, "SAWTELL / ADELAIDE" with the Prince of Wales Feathers above "SAWTELL". Underneath on remains of white tape in red: "159."surveying, compass, charles todd, overland telegraph line, telegraph

Found on a wood heap near the tractor shed. Only the top portion remains. The former fixture is the tapered top section of the wooden flagpole that formerly stood at the front of the head keepers quarters. There is a hole with attached metal pulley near the top which allowed for hoisting the flags to signal passing ships. Signal flags were hoisted on the flagpole and were used to communicate with passing shipping. Messages were then relayed by the overland telegraph line to Eden. Remains of black paint provide evidence of the blackout measures implemented during World War 11. The pole is currently fixed to a stand to allow for its display.The pole remnant has second level significance for its historic value and provenance.Top sction of a flagpole. At the top it is tapered and fashioned into a square section. Near the top of the pole is a hole with a metal pulley inside. There is black and white paint flaking off leaving bare wood.

.1) Overland Centenary Supplement to The Australian. Six pages of information and images including the Roper River Camp, First Telegraph Pole at Port Darwin, Route of the Overland Telegraph, Australian Telecommunications Development Association, Alice Springs, Frew's Ponds. Charles Todd, Alice ToddFrank Kraegen, Pony Express. .2) 'The O.T. Line' - four page coloured news shhet published of by the Australian Post Office for the Overland Telegraph Line Centenary, 22 August 1972. Includes articles and images such as J.A.G. Little (Darwin Poatmaster), Robert Patterson, Charles Todd, A.J. Mitchell (surveyor), Maps of the sections (Begot's contract, Central Sections, Darwent and Dalwood contract, Patterson contract), planting of the first pole at Darwin, Roper River Camp, Charles Todd, Alice Todd, Alice Springs Repeater Station, Grave of Kavenagh, Roper River, Frank Kraegem, Maryvale station.roper river camp, telegraph pole, port darwin, overland telegraph route, australian telecommunications development association, alice springs, frew's ponds, charles todd, alice todd, frank kraegen, pony express