All professional engineers have a little book in which they jot down those notes of fact figures & formulae which they feel that they are likely to need on future occasions. It is always more convenient to look up one's own records than to wade through a lot of associated but irrelevant material especially as this may mean a trip to the reference library. Over a period of years the contents of such notebooks grow to cover a wealth of vital information & the time saved can be considerable. During his professional life Tubal Cain filled three such books & as a lifelong engineer he is in a unique position to select (and add to) the material most useful to the amateur engineer. Model Engineer's Handbook comprises a compilation of those tables facts procedures & data which the author himself found valuable in his model engineering activities & it provides a real mine of information to which you will return again & again. Not the least of its attributes is the use where appropriate of data & calculations in both Imperial & SI units so that all generations of model engineers can feel at home. In this third edition all the existing data has been updated or re-arranged for greater clarity & much new matter has been added to provide an even more comprehensive book indispensable to the expert & beginner alike.