"TM 6-240 "
"War Department Technical Manual"
"Field Artillery Military Slide Rule"
Printed 1945
- Cover
- Title Page
- Table of Contents
- Chapter 1 - Introduction ------------------------------------------------- pages 1-4
- Section I. General ------------------------------------------------ page 1
- 1. Purpose and Scope ------------------------------------- page 1
- 2. References ---------------------------------------------- page 1
- Section II. Description -------------------------------------------- page 1
- 3. General ------------------------------------------------- page 1
- 4. Component Parts --------------------------------------- page 1
- Figure 1. Illustration of slide rule -------------------- page 2
- Figure 2. Illustration of component parts ------------ page 4
- Chapter 2 - Principals of Slide Rule Operation --------------------------- pages 5-17
- Section I. General ------------------------------------------------ page 5
- 5. Scope -------------------------------------------------- page 5
- 6. Suggestions to Student ---------------------------------- page 5
- Section II. Solving Arithmetic Problems --------------------------- page 5
- 7. D Scale ------------------------------------------------- page 5
- 8. C Scale ------------------------------------------------- page 7
- 9.Multiplication with D and C Scales ----------------------- page 7
- 10. Division with D and C Scales -------------------------- page 8
- 11. CI Scale ----------------------------------------------- page 10
- 12. Multiplication Using CI Scale -------------------------- page 10
- 13. Division Using CI Scale -------------------------------- page 11
- 14. A Scale ------------------------------------------------ page 12
- 15. Squares of Numbers ----------------------------------- page 12
- 16. Square Roots of Numbers ----------------------------- page 13
- 17. Proportions -------------------------------------------- page 13
- 18. Special Proportions ------------------------------------ page 14
- Section III. Trigonometric Problems ------------------------------- page 15
- 19. SIN Scale --------------------------------------------- page 15
- 20. SIN-TAN Scale --------------------------------------- page 15
- 21. TAN Scale -------------------------------------------- page 16
- 22. ARCTAN --------------------------------------------- page 16
- Section IV. Accuracy --------------------------------------------- page 17
- 23. Limits of Accuracy ------------------------------------- page 17
- Chapter 3 - Field Artillery Survey Problems ------------------------------ pages 18-31
- Section I. General Problems -------------------------------------- page 18
- 24. Solving Short Base Problem --------------------------- page 18
- 25. Computation of Coordinates --------------------------- page 21
- 26. Determining Direction ---------------------------------- page 27
- 27. Determining Distance ---------------------------------- page 28
- 28. "Point P" Method of Determining Length of Short Base - page 28
- 29. Determining Short Base by Sine Law ------------------- page 30
- Section II. Special Observation Battalion Problems ---------------- page 30
- 30. Sound Range Plotting ---------------------------------- page 30
- Chapter 4 - Adjustment and Care ---------------------------------------- page 32
- 31. Adjustments -------------------------------------------------- page 32
- 32. Care ---------------------------------------------------------- page 32
- Appendix -Answers to Exercises ---------------------------------------- page 33
- Index -------------------------------------------------------------------- pages 34-35