The whole machine is about 3 feet tall, 3 feet deep, and 5 feet wide, and weighs 500 pounds. There is no "skid," no place to put forks or a lifting hook. We use four guys to lift it and move it. I understand this would classify as "tiny" in your book but to us it's pretty big!
To illustrate the performance, I attached a plot of two cooling curves. One curve was when the chamber's work space was empty, and the controller was programmed to the lowest set point (S.P.) possible. Notice how the chamber began warming back up. I turned it off at that point because I knew from experience that it would never get any colder.
I also plotted the "benchmark" curve using data from the table in the datasheet. The table gives time, in minutes, for the chamber to change from ambient to the given temperature. It lists times for all but the lowest temperature, which makes sense because it's an asymptote. I just called it 300 minutes for the sake of plotting on the same graph as the other curves.