I too have collected a bunch of old planes, some small but I also have a real big one ~2 feet long. I'd have to check the makers?
I started to learn traditional timber framing from an old gentleman who many considered a master, Richard "Dick" Babcock. He taught me to do layout of beams, posts and braces without the use of a square, or tape/ruler. The tools used are a large divider/compass, plumb bob, and chalk line. You can make things perfectly square and layout precise angles. You can use those tools to mark logs to be hewn into timbers, and mark the joinery on the timbers.
I've also acquired a collection of other hand tools used to convert trees into a timber frame. Two man saws for felling (thin and flexible) and bucking (wider in depth and less flexible). Hand saws for ripping and crosscuts. A large collection of framing chisels of various size, corner chisels, and a large slick. Hand augers, hand drilling braces, and a hand boring machine, all used to open pockets for mortices and bore holes for pegs. Axes and hatchets.
All these tools are antique but in excellent working condition. As Inor mentioned with the planes it takes some skill to maintain/sharpen many of these tools.
The saws need not only to be sharpened with proper files, but the teeth "set" to maintain a kerf so the saws won't bind. The two man saws also have rakers that are filed to be sharp and peel out the scored wood from the kerf, and also set the depth of the cut for the cutting teeth (depth set different for hard- vs soft-woods). The chisels are sharpened much like iron on a plane Inor mentioned, using various stones. The axes and auger bits sharpened with both files and stones.
I don't have any pictures handy but can take some if if anyone is interested?
On old frames there would be a beam that had a series of circles scribed into it with a compass. These circles were reference for laying out the joinery on the whole frame. Framers would set their compass from these circles as they laid out the joinery. You'll notice "the star of David" was laid out to get perfectly square sides , and ends on the beams. Laying out braces with a compass/divider is a little more involved, but you can make perfect 45 degree braces, or 30 60 degree braces, and layout their mortices too.
Here are a couple of sketches I did showing layout of posts and beams for a timber frame.
post and tie-1.pdf
To learn, my first project was a "timber framed" woodrack, for inside the house from some 4 X 4" ash I milled up ( cheated there milled not hewn). A few pictures showing the woodrack and some of the layout/joinery (circles/chalk lines) on the tie beams on the bottom. I used a shouldered M + T joint on the tie so it could handle the weight of a full rack of wood. Everything was square and the joinery tight.
Hope I did not hijack your thread @Inor. I'll get some tool pictures next post.