Handbook of Artillery Instruments and Rage-Finders. Part I. Section 16, Indicator, Time of Flight, Mark IV Handbook of Artillery Instruments and Rage-Finders. Part I. Section 14. Calculator, Ballistic Correction, no.1, Mark I. 1933 Directions for the use of artillery instruments. Pamphlet no.3. The Slide Rule, 1937. WO 7332
