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Air Ministry Official Notices

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 1 March 1939



No. 1 of the year 1939. Civil Specification Memorandum No. 21 Civil Specifications No. 19 (Accumulator Cutouts or Reverse Current Relays), No. 20 (Absolute Atmospheric Pressure Gauges), and No. 21 (Voltage Regulators) have now been issued and can be purchased, price 6d. net per copy or 7d. post free, either direct from His Majesty's Stationery Office at any of the following addresses:—York House, Kingsway, London, W.C.2; 120, George Street, Edinburgh, 2; 26, York Street, Manchester, 1; 1, St. Andrew's Crescent, Cardiff; 80, Chichester Street, Belfast; or through any bookseller.


(1939), "Air Ministry Official Notices", Aircraft Engineering and Aerospace Technology, Vol. 11 No. 3, pp. 138-138.




Copyright © 1939, MCB UP Limited

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