Purpose built mechanical calculation machine for determining the drift of aircraft when operating in crosswind conditions. This device has an eyepiece and a prismatic periscope for viewing a distant feature being tracked. This device has calibrated rotary scales for height, speed (in KNOTS and MPH), and an adjustment to preset the 'crab angle' of the aircaft for cross wind compensation. The device can be opened for cleaning or maintenance purposes. Refer to the following extracts for information about bomb drift: "Crosswinds brought into the bombing problem a new factor, "drift" In order to fly a given ground track in a crosswind, an aircraft had to "crab" into the wind; the angle formed between the aircraft's true heading and its ground track was called the "drift angle" In a crosswind, the bomb would impact directly behind the aircraft and along its longitudinal axis at the moment of release. But this meant that the bomb would strike the ground at some point downwind of the aircraft's ground track. Thus, in order to score a hit, the bomber had to fly a ground track that ran upwind of the target." "Air resistance acting on a bomb after release caused it to lag behind the drop point and hit somewhere behind the bomber. The distance from a point beneath the aircraft at the instant of bomb impact to the point of bomb impact was called "trail." Trail increased as the bomber's airspeed increased or as its altitude increased. Furthermore, since different bombs encountered different resistance in the air, trail was also a factor of bomb shape."A. M. Drift Recorder MKII REF. No 6B/190 No 2668/41 X/ 3606 3E4H28

Includes amendments for Meteor 3

Document is several hundred pages long, and is nearly 10cm thick. Photocopied version is not identical to the other Meteor T Mk. 7 Manual located in the same box, although the contents will be very similar.

Historical Details: . Description: The Gloster Meteor T7 trainer was built in England during the early 1950s, and was designed to facilitate the training of pilots in the transition from propeller-driven combat aircraft to jets. From 1951 until the early 1960s the principal jet fighter. Level of Importance: State

Used in the development of the Civic centre - pamphlets 1968. Feasibility study and report of the existing town hall complex at the corner of Maroondah Highway and Civic Place, Ringwood, April 19701. Report and feasibility study. Black 2-hole bound book with 22 inserted pages typrwritten.; 2. Bifold pamphlets with dark brown/sepia picture on front. Other pages printed. +Additional Keywords: Marshall, B R / Dwerryhouse, F P (Town Clerk)

ARL Report SM.240

Air Ministry

Commonwealth Aircraft Corporation

Contents are stored on a CD. Also stored by the Australian Aircraft Restoration Group on the Australian National Aviation Museum OneDrive.

Total of 91 amendments made over the period from July 1951 to March 1963.

Comprises a section on user unit repairs (part 3) and a section on the major repairs scheme (part 4)

CAC Keith Meggs Collection