I used this version for decades....and used the small E6B aluminum computer issued to me by the US Army in 1967 right up to the day I gave up flying. It was made of cordura, had an elastic strap to hold it to your leg, included a small clipboard that held a small writing tablet and would also hold approach plates. The clear panel on the right hand side could hold a checklist sheet or some other item that was handy....approach chart...local area map...frequency chart....girl friend's phone number.
