Nice, I have a full sized Vaughn drag saw which is currently in a logging museum in Northern California. My older brother restored it 20 years ago. The bar is 2 parallel rails about 3 feet long the clamp for the blade mounts on the rails and travels about 2 1/2 feet the whole bar pivots from the rear. The blade is 6 foot long with 2” double cut teeth, the pitman arm is roughly a foot long and drives to the center of the slide. Stroke rate is around 60 per minute.