Assembling the Brinsmead action. Seen here, the first of the hammers being screwed into place. Note the second flange under the hammer flange – this is the assembly used for the hammer “setoff” (the distance from the string that the hammer ceases to be powered by the piano key). Adjustment is by simply turning it by hand – no tools needed.

Mid way through the initial regulation of Blüthner No.83988. Here I’m doing a rough adjustment of the “setoff”, on the work bench.