An extremely handy pocket sized reference booklet of data charts and tables for the drawing office, toolroom or workshop. This metric revision publication is produced by Zeus Precision Charts Ltd, who are members of the British Standards Institution. The 28 laminated pages contain data on standard drill sizes and decimal equivalents, tapping drills and clearances for metric and imperial threads, BS4500 tolerances, hardness comparisons, jig boring co-ordinates for equally spaced holes, allowances for sheet metal bending and Morse tapers. Also, long tables for sine, cosine, tangents and cotangent. Zeus Chart Engineers
. . 1. Standard Drill Sizes And Decimal Equivalents 2. Iso Metric Fine Threads In Mm 3. B.A. Standard Tapping Drills 4. B.S.F. Threads 5. Tapping Drills 6. Whitworth Threads 7. Tapping Drills 8. British Standard Pipe Threads 9. Tapping Drills 10. Unified Screw Threads 11. A.N.C. Threads 12. Tapping Drills 13. A.N.F. Threads 14. Tapping Drills 15. Iso Metric Coarse Threads 16. U.N.F. Fine Thread Series 17. Tapping Drills 18. U.N.C. Coarse Thread Series 19. Tapping Drills 20. Selected Iso Fit - Hole Basis 21. Hardness Comparison Table 22. Co-Ordinates For Locating Equally Spaced Holes In Jig Boring 23. Allowances For Sheet Metal Bending 24. Morse Taper Sleeves 25. Table Of Natural Sines 26. Table Of Natural Tangents 27. Letter Addresses For Numerical Control 28. Numerical Control (G Code) 29. Standard Miscellaneous Function Words From Usa-Eia Standard 30. Commonly Accepted Symbols And Abbreviations Used On Engineering Drawings 31. Solution Of Oblique Angled Triangles 32. Solution Of The Right Angled Triangle 33. Conversion Factors