Directions for the use of artillery instruments. Pamphlet no.3. The Slide Rule, 1937. WO 7332 Directions of the use Artillery Instrument. Pamphlet no.8. The Comparator, Sound Ranging. WO 7336 Directions for the use of artillerie instruments Pamphlet no.9. Recorder, Sound Ranging, no.1, Marks II, III, and IV. WO 7337 Directions for the use artillery instruments. Pamphlet no.11.The Twin Marchant Calculating Machine, WO 7339 Directions for the use of artillery instrument. Pamphlet no.13. Carrier Link, Sound Ranging. WO 7341 Directions for the use of Anti-Aircraft Artillery Instruments Drill. Pamphlet no. 7. Predictor. 3.7 inch A.A. no. 2, Mark I; 3 inch, 20 CWT. A.A. … Directions for the use of artillery instrument. Pamphlet no.14. Sound Ranging Equipment, Misellaneous, WO 7034 Handbook of artillery instruments and range-finders. Part. I. 1933. Section 33. Director no. 7, Mark III A with notes on Marks I, I**, I**A, II, … Instrument Drill for Equipment Radar A.A. [ Anti-Aircraft] , no. 1, Mark 2. - Engeland Voorschrift 26/GS Publications/1362 WO 7397 Instrument Drill for Telescope Identification, A.A. [ Anti-Aircraft] - Engeland Voorschrift 26/GS Publications/1207 WO 7392 Instrument Drill for Predictors, A.A. [ Anti-Aircraft], nos.2 and 5 - Engeland Voorschrift 26/GS Publications/1177 WO 7394 Vocabulary of army ordnance stores. Section W 5. Instruments for testing optical and fire control instruments WO 302