This is the popular small pocket booklet that is the reference book for fitters, metal workers and draftsmen. It is printed on stiff card, with a protective plastic coating that makes it very durable for use in the workshop.
The pages are heavily laminated and include details on standard drill sizes and decimal equivalents, BA standard tapping drills, threads, and tapping drills, ANC threads and tapping drills, ISO limits and fits, and hardness comparison tables.
An extremely handy pocket-sized addition to any workshop.
