Used with the Plane Table - Item 4130, in surveying classes at Ballarat School of Mines. Item 4127, Tripod Location Chains, may also have been used.A large tripod of timber construction. Concave top mount flange to receive matching spherical spigot. Spacer block halfway up each twin-strut leg.In white paint on the top "PTI" Manufacturer's stamp on each leg - circular. "W.& L.E. GURLEYtripod, surveying, scientific instrument, ballarat school of mines, plane table, location chains, w & l e gurley

According to Max Clarke this item was used by the surveying classes at the Ballarat School of MinesA boxed (timber) theodolite with crossbars and full-length stadia wires. The theodolite can be mounted on a metal straightedge base. The box also contains a magnetic compass with two bubble levels, a plumbing folk, and 4 brass paper clips designed to suit a plan table. On box in black paint "A 1". Inside box lid is manufacturer's label and Stadia measurement zero reference calibration.ballarat school of mines, surveying equipment, gurley, max clarke, theodolite, stadia measurement, calibration, scientific instrument

Used at the Ballarat School of Mines in Surveying classes. It was used in conjunction with Item 04129 - Collapsible leg surveying instrument, tripod, and at times with Item 4127 - Tripod location chains.A wooden platform used in surveying equipped with a 2.7 cm diameter dowel at each end that would hold the charts/papers in position. A spherical mount on the underside, designed to match the receptacle on top of the tripod - Item 04129.Manufacturer's stamp underneath.plane table, surveying, w. & l.e. gurley, scientific instrument, ballarat school of mines, tripod, location chains

The Gurley enterprise was established in 1845, first as the partnership of Phelps & Gurley and in 1852 as W. & L. E. Gurley. William Gurley and his younger brother Lewis E. were both engineering alumni of Rensselaer Polytechnic Institute, in Troy, NY, and brought to the business a hunger for technical innovation and unrivaled marketing skill. Exposure at the Centennial Exposition in 1876 launched the company into international prominence from which it never fell. The brothers built a factory in 1852 that operated in departments, each department turning out different components, which were then assembled. This revolutionized the industry which, to that time, operated as small shops making, essentially, individual instruments. Gurley was able to roughly halve the price of their instruments over those of their competition, while maintaining quality. (https://www.gurley.com/history)A timber box of 30 lantern Slides.astronomy, lantern slides, gunn's, w. & l.e. gurley