Quote: (Originally Posted by
Nick Kay)

Have ordered the "Mastering Rebreathers" book via Amazon, though quoted delivery is 4-6 weeks

I read "Mastering Rebreathers" & I wasn't that impressed by it.
I found AP's manual very good, but obviously unit specific.
Apart from that, the IANTD book "Tek Closed Circuit Rebreather" is a very good read once your over the basics.
Rebreather Books
JT