I'm looking at the Studley tool chest on my desktop picture and isn't that a no. 1 in the arched cubby with the columns? So you may use them to make pianos?
The smallest bench planes I have are no. 2's ( Stanley and Ohio tool) and they are more comfortable to use than a block plane. I've only held but never used the no. 1, it is small, astonishingly small but if it was good enough for Studley......