Hi Steelgoose
At the moment there are 3 types of latching relays;
1) Zettler AZ832P2-2C-5DE, this is a 2 coil DTDP 10 pin relay with a traditional 2.54 and 5.08 pin spacing. http://www.zettlercn.com/uploadfile/attachment/eaf2f966a55e051935121736a0771683.pdf
2) Schrack RT314F05, this is a 2 coil DTSP 9 pin relay, the NC, NO and CO pins have a 5.08 spacing but the coils are connected via a 3 pin arrangement with a 3.5mm spacing. http://datasheet.octopart.com/RT314F05-TE-Connectivity-datasheet-41527841.pdf
3) Schrack RT424F05, this is also a 2 coil DTSP 9 pin relay, the NC, NO and CO pins have a 5.08 spacing but the coils are connected via a 3 pin arrangement with a 3.5mm spacing. (sorry there isnt a link, I'm new here so 2 URLs is my limit)
It was the odd pin spacing on the Schrack relays that made me thing about designing some pcbs.
I have downloaded Inkscape and am still playing with it. I opened the DTDP relay from earlier and have altered it to reflect the relay #1 (the 10 pin one), I’m not sure if I did it properly but the schematic and pin layout look correct.