Hi,
I've get on Ebay an Time Distance COMPUTER Type D-4 like photo below,
but does anyone have a user manual or instructions user for this item,
a digital copy will suit me, I couldn't find anything on the internet.
Or tell me in which USAAF book or training flight manual, I could find the use of this computer ?
Many thanks
I've get on Ebay an Time Distance COMPUTER Type D-4 like photo below,
but does anyone have a user manual or instructions user for this item,
a digital copy will suit me, I couldn't find anything on the internet.
Or tell me in which USAAF book or training flight manual, I could find the use of this computer ?
Many thanks