The pressing donkey was shaped like a double sleeve board, one being the base, the other the working surface. One end wider than the other. The bespoke presser used to press everything off, on the donkey. It would be about 27 inches in length and about 10 inches in height. his only other equipment would be a damp rag a piece of linen for pressing off! A bucket of water for soaking the damp rag, a little piece of hard soap (used for the seams). A sponge made out of a roll of waste cloth, one end cut to resemble a brush, again for the seams. a couple of 16 pound goose irons. One on and one off the gas ring, to keep a constant heat. To check the iron was not too hot, he would spit on the face of the iron, it either sizzled or bounced off the iron like a little bubble. I am not sure which one signified the correct temperature. He pressed all day, none stop; at his little table. It was amazing to watch him working.
I am sure you know all this, but; I thought others would like to read about it.
Another thing that used to be done with the hard soap, that people might not know about these days, was to soap the canvas's. When the coat had the final press, it acted like an adhesive, sticking the canvas and material together. (the forerunner of fusible!)