Document ID: chunk:federal_register_of_legislation:F2013L01343:front:0:p21
Version: federal_register_of_legislation:F2013L01343
Segment Type: other
Provision Reference: 
Character Range: 53679–56351

has been replaced and the covers are a mixture of replica parts and repaired originals.

Doors
There are three doors inside the Main Hut which are part of the original fabric. These include the door into the workshop from the porch, and the door between the workshop and living room and the darkroom door.

Magnetograph House

The Magnetograph House is an Oregon frame timber hut, prefabricated by Risby Brothers (Hobart) and erected in March 1912. Tongue-and-groove Baltic pine boards are used for internal and external cladding, and the walls are reinforced by approximately 30 t of rock. Fastidious steps were taken to make the building impervious to wind. Sheets of tarred builders paper were installed under each timber lining and a final continuous tarred paper covering was placed over the inside wall. The whole of the framework was secured by means of copper spikes and bolts. A shortage of small copper nails necessitated the use of some iron nails to fasten the lining but not within 6' of the instruments. The building was insulated with some twenty sheep skins on the roof and windward side. The plan is rectangular – 5.5 x 2 m. The shallow-pitched skillion roof has a copper ventilator. There is an inner and outer porch with three door sets. The external door is a double 'stable' ship's door taken from the Clyde shipwrecked at Macquarie Island. The internal door is inscribed with a description on how to enter and exit the building.

Absolute Magnetic Hut

The Absolute Magnetic Hut, erected in February 1912, is a standing ruin consisting of a complete south wall, portions of the east wall, and the framing of the north and west walls. The frame is constructed of leftover Oregon timber with timber boarding and tarred builders' paper lining and is fastened entirely with copper spikes and bolts. The plan is 1.8 m square, sited on a rock shelf and originally anchored to the ground. The skillion roof was removed by BANZARE expeditioners in January 1931.

Transit Hut

The Transit Hut is a roofless stabilised ruin of what was originally known as the Astronomical Observatory, built on a manually constructed stone platform in May 1913 to house a theodolite to take astronomical observations to determine the latitude and longitude of Cape Denison. These coordinates were painted on the plinth in the centre of the hut.
The Oregon timber frame braced by metal shelf brackets was lined with packing case timber and clad in sheepskin and canvas. There is a partial lining of asbestos cement sheeting. The structure had one door in the northeast corner. A 20" transit telescope loaned to the expedition by the Melbourne Observatory was housed on a 255 mm