DND 640 Lubricant
I have run across a 17 March 1945 Technical Memorandum from the Director of Signals, Canadian Army advising of proper lubrication of the tuning gear set for the AR88LF. The above noted lubricant is identified in stock as the one to be used for this work.
Does any one have any other references to DND 640, know if this item is still in stock, or what lubricant may have evolved from it in today's world?
David
|