Socket, Type 39, 4-pole

I have the 6A/2235 as being fitted to the Sunderland and the Wyrern.

Just reading a WWI document about bomb dropping theory and the following information was offered.

Group I., terminal velocity, 900 feet per second:-
16 lb., 50 lb., 63 lb., 100 lb., 112 lb., 520 lb.

Group II., terminal velocity, 1500 feet per second:-
180 lb., 250 lb., 550 lb.

I have 5CZ/5074 listed as P/N 5165Y Mk1. I hope this info is of some use.

27WW is the section number for Aircraft windscreen wiper equipment.

If someone has AP4515C, Vol. 3, Pt. 1, then all about this valve will be revealed.

Mike
You are right in that the M.3 clock is only listed as being used in the Miles Magister and that it’s sec/ref. no is 6A/944. I have always thought it must be a Smiths product as they made the M.1 clock.
I have also been interested on getting my hands on one as well.

As to my web page, yes it has gone, my ISP sent an email one day saying that “soon” it would be no more. I focused on removing other material before my clock info and before you know it had gone. So even I do not have the most up to date version of it.

I use the wayback machine myself so will one day put it back up.

Anyway, I do have just a little more info on the M.3, this from an RAAF document, listing the specifications of clocks and watches in use at the time.

The types A.250 (6A/951) and the M.3 (6A/944) have the following statement: 12 hours with chronograph – (time of trip) in operation at normal temperature. and no other details about performance as all the other ones listed.

I know that the A.250A is a luminous watch from the early 1930’s and I suspect that the M.3 is of a similar vintage as well.

The fatigue meter is a Mk 11, part number M.1946.
The section reference number is 6A/6485 and NSN is 6610-99-1082470

Fitted to the Andover, that’s all I have.