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物品 #:
248379292
Reading Blueprint Dimensions Workbook: Learn to Read Any Technical Drawing with 20 Practice Drawings, Tolerance and Limit Math, Scale and Fit Drills,
物品 #:
248379292
HKD 137
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產品詳情
- A dimension on a drawing is two things at once: a size, and a statement of how much that size may vary from part to part. A reader who takes only the first has half of it.Every tolerance can be turned into two numbers, the largest and the smallest the feature may be. Once a reader can do that, everything else in this book follows from arithmetic: the fits between a hole and a shaft, the way tolerances add along a chain, and the scale that turns a drawn length into a real one.The drawing is the record. A dimension is read, never measured off the paper.WHAT IS INSIDEPart 1: what a dimension is. Extension lines, dimension lines, the value and the tolerance; six kinds of dimension; the rules a reader works to; what the drawing does not say.Part 2: the title block. The part, the scale, the units, the general tolerance, the projection symbol and the revision, and what each one settles.Part 3: tolerance. Bilateral, unequal bilateral, unilateral and limit forms, and how to get the two limits from each. Eight sizes read and worked.Part 4: how the sizes are laid out. Chain, baseline, ordinate and combined, and why a chain accumulates while a baseline does not.Part 5: fits. Clearance, interference and transition, worked from the four limits. Largest clearance, smallest clearance, and what allowance means.Part 6: scale. What a ratio means, the arithmetic both ways, a view at its own scale, and inches to millimetres.Part 7: hole notes and surface texture. THRU, depth, counterbore, countersink, spotface and thread; 4X, TYP, EQ SP and PCD; the surface texture marks and what each one requires.Part 8: forty reading drills, five items each.Part 9: twenty practice drawings, each with a plate, its dimensions, its title block and six questions.Part 10: eight fits and four tolerance stacks, worked in full.Part 11: nine readings worked through, from a size read without its tolerance to a question the drawing cannot answer.Part 12: complete answer keys, reference tables and a glossary, followed by the records pages.HOW IT IS BUILT146 pages. Ten figures and thirty-five tables in clean black and white. Forty drills, twenty practice drawings, eight fits, four stacks, nine worked readings, and a full answer key that gives the answer and where it comes from.Every limit, clearance, stack and scale figure in the answer key is worked from the numbers printed on the drawing by the rules stated in Parts 3 to 6. On the practice drawings the features are drawn where the printed dimensions put them, so the picture and the numbers agree.THE CONVENTIONS THIS WORKBOOK STATESA dimension is read, never scaled off the sheet: the printed number governs. An ordinary untoleranced size takes the applicable general tolerance when the drawing's notes or standard make that general tolerance applicable to it. A value in brackets is a reference, given for information and not worked to.WHO IT IS FORAnyone handed a drawing and expected to work to it: a machinist, a fitter, a fabricator, an apprentice, a buyer or planner who needs to know what a drawing is asking for, an inspector learning what the numbers permit, and a student meeting dimensions and tolerances for the first time.WHAT THIS BOOK IS NOTThis is a reading workbook, not a design or an engineering document. It does not design a part, choose a tolerance, select a standard fit from a table, or say whether a size suits a service. It does not cover geometric tolerancing: feature control frames, datums and material condition modifiers are a separate subject. It does not inspect or measure anything; how a size is verified is the inspection plan's question. Where a drawing and this book disagree, the drawing, its title block, its notes and the responsible engineer win.
| Publisher | Independently published |
| Publication date | 14 Jun. 2026 |
| Language | English |
| Print length | 146 pages |
| ISBN-13 | 979-8181517417 |
| Item weight | 277 g |
| Dimensions | 15.24 x 0.84 x 22.86 cm |
產品敘述
Reading Blueprint Dimensions Workbook: Learn to Read Any Technical Drawing with 20 Practice Drawings, Tolerance and Limit Math, Scale and Fit Drills, and Complete Answer Keys
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HKD 137
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特色和優勢
- Master technical drawing comprehension confidently.
- Explore 20 original practice drawings designed for learning.
- Learn essential concepts like tolerances, limits, and scale arithmetic.
- Gain insights through complete answer keys for all practice questions.
- Designed for apprentices, students, and hobbyists in machining and welding.
- Compact and organized format with reference pages for ongoing learning.
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