Carbon typed copy of a technical procedure - 4 pages -"Graphical Location of Trolley Wire" giving the guide on how to locate trolley wire on curves and junctions, gives formulas, positioning at frogs, notes regarding various cars and trolley wire height. Consists of four pages with a blue print drawing. Each page has been scanned the blue print drawing reversed imaged as well. 4768.2 - the blue print drawing. Extracted from "Transit" Journal - April 1934. Dated 10th Jan. 1935 BTPS Number "226". "226" in ink on left hand bottom of first pagetrams, tramways, overhead, trolley wire, points

Carbon typed copy of a technical procedure - 3 pages "Rectifier Protection" gives details on cell failures, surge voltage protection, bridge circuits, over current and provides four figures to illustrate the paper. Written D.B. Corbyn and N. L. Potter in a paper to the Institute of Electrical Engineers London. Not dated. Assumed mid 1930's. BTPS Number "216". "216" in ink on left hand bottom of first pagetrams, tramways, electrical engineering

The donor's father (William Clarence Christopher) was born in 1906 in Williamson Street, Bendigo and was schooled at the Bendigo School of Mines. The notebook on theoretical Carpentry must date from around 1920 when he was an apprentice. His brother James Charles Christopher was a teacher, the Solid Geometry drawings date from 1925-1932 and were submitted by students at Ballarat Junior Technical school. The book od building regulations was used by William Clarence in the 1940's and 50's while employed as a building foreman at Braybrook by Industrial Engineering Ltd.The manuals are covered with brown paper and the title in red or black texter on the front. The theory Carpentry is handwritten, the three Solid Geometry are made up of individual drawings and the Uniform Building Regulations is printed.technical books, school of mines

Cardboard cover front and back, with red tape on spine. Contains typed instruction notes related to Fitting. There are some blank pages on the left side which have hand written notes dating from 29 January 1941. The back cover, outside, is covered with signatures and five digit numbers. (Possibly fellow students on this course, with their enlistment numbers.) Front cover. Hand written.Brunswick Technical school Dawson St Brunswick. RAAF Station West Melbourne Some other writing, illegible.ww2, defence training