Tom: glad to see someone making reasonable use of 'old' technology with the latest (the LS). Pre-GPS, I used to use my Sipe Sumner compass to establish magnetic north on my surveys, most of which I took sunshots on and referenced to astronomic north. But, it was good to compare as a reference since almost everyone else in our area was using some variation of mag north.
I met Mr. Sipe at a conference at Penn State in the late 1980's and purchased my compass directly from him. He was still very sharp, even remembered some specifics of a survey he had done in my part of the state in the early 1900's. I also bought his book, which I later learned is somewhat controversial, although I truly believe that, like all of us, he made a good-faith effort to apply rational methods to the 'art' of surveying.
Your pictures have given me some ideas for extending line from the LS in heavy woods where it might bog down. I considered packing my Wild T0 along to do that, but the S-S compass would be much easier to pack. I had a machinist thread the Sipe azimuth base to fit a prism pole so I wouldn't need a tripod or jacob staff.
Thanks for sharing your ingenuity.