Stage 3 - Medical, Study materials
A few posts back there was topic about leg length during stage 3 medical ...
Yes, they do measurements for leg length and arm length as well. These are not required to get a Class 1 Medical, however I was told that it is CX's internal policy for all candidates to meet specific internal length requirements before you can pass the medical. For instance, leg length must be 100cm+. If you don't meet that requirement, even if you're 99.9cm, you'll fail your medical assessment. Something to keep in mind before you start the application process, because if you don't meet the requirements, there's no point spending all your time prepping for all CXCPP interviews.
As for books, I found "Ace the Technical" to be very useful, but be aware that some of the answers are incorrect or unclear. You have to do your own research to confirm. Depending on your experience/knowledge level, many of the questions/topics are too advanced, but it never hurts to be over-prepared.