Back when I cruised timber in the early 70s in the Pacific NW, cruisers axes were always considered to be a double bit, 2.5 lb head, with 28" handle. Those we had were mostly Plumbs but there were a few Collins around. There was one in every 4x4. They were delightful, lively axes to use, but we never used them for blazing trees, just things like clearing a blow-down out of the way if you didn't have a chain saw. Marking, whether individual trees or sale boundaries, was always done with spray paint, and had pretty much been that way since the 1950's. We also would use them for axe throwing contests if there was a convenient butt from some old growth logging done back before WW I that was handy to where we met for lunch. It seems like there was always somebody who would either break the handle or go over the target and send the axe down the hill into an old slash pile covered with Himalayan black berry vines. The salvage office would get the busted handle ones, which were sold as scrap steel, since it was cheaper for the company to just get a new axe than re-handle the old one. Honestly, our most used cutting tools when we were laying out sale boundaries, running property lines, or looking for section corners were machetes. All the ones I used were Collins Legitimus with canvas sheaths and dates on the blades in WW II years (same vintage as the BLM C rats we could have if we wanted them. The canned peaches and the cigarettes were the best finds.) The machetes were lighter, easier to sharpen and let you move through the brush quicker than messing with an axe. We had a few machetes that were also Collins, but had heavier, longer blades and really nice leather sheaths, which typically would get used by the new hires, just once, as they quickly learned they were too heavy and the sheaths were a pain to deal with too - the canvas ones could be folded and shoved in the back of your cruiser's vest, but not those stiff leather ones.
This may have been posted before, but back when homesteading was going on in late 1800s, you could also file a timber claim. The big timber companies used to sponsor immigrants (many from Scandinavian countries) to the U.S., paying for their passage and providing enough supplies to get a shack set up on the claim and then live there the required amount of time to "prove up" on the claim, at which time it was signed over to the timber company. Also, the railroads had vast timber holdings which they wanted values on and I wouldn't be surprised if they were actually the first large scale users of timber cruisers. IIRC, as incentive from the federal government to punch the lines through, the railroad companies were given something like every other section of land on both sides of the tracks, for 3 sections deep. Section is one square mile. A great book about timber cruising in Alaska was written back in the 1950s by Jay Williams, and is titled "Alaskan Adventure". Last, I do have a couple of Collins double bit hatchets that I guess are "saddle cruisers" (is that a real name? It sounds like an antique dealer's creativity at work...). I use them when camping and hunting; when sharp, they work well for skinning an elk and getting it into quarters if you don't have a small saw.