I scratch build scale AFV models for a hobby and purchased the entire set of these books (all at around half price here on Amazon) with the intention of creating various models from them.
I was very disappointed to find that they are not very accurate nor well detailed.
I have been drawing engineering drawings for work for over 25yrs so I do know my way around scale drawings.
At first glance these plans look great, however, if you try to use them to build from beware.
There is no indication of hidden detail which makes it very difficult to identify the real shape of parts, especially tank hulls.
Also there are discrepancies between the plans and elevations - the same detail in some cases is ether drawn at a different size or even in a different position. When compared to photographs of real vehicles it also becomes apparent that a lot of detail is missing from the plans or wrong.
I am building a 1/15 Vickers Light V1b and T34/85 and can definitely say that the plans for these vehicles have inaccuracies and inconsistencies. I have also shelved my idea of building an early Stug III due to the lack of details on the plans.
Having said all that - where else are you going to get books full of large tank plans?
So, in conclusion, they are nice to look at but do not believe all that you see if you intend to build from them - check against real photographs wherever possible and any other sources of dimensions before commencing. If you approach them knowing this then they can still be useful.
I have just come into possession of this book. Over 70 sets of vehicle plans, in most cases a minimum of 4 views, and using a shading system to emphasise shape, this volume covers most of the major vehicle types of the 30s, through to 1948 (BA 27 to IS 7). A number of photographs (some of them new to me) are reproduced to round out the subject. The plans come in a variety of scales, but since a list of conversion factors is also supplied there is no need to worry about the scale presented. If you are interested in the history of Armoured Fighting Vehicles, and particularly as a modeller, then George Bradford's AFV Plans, whilst not a particularly good "read", are a must for your library.