the Nutone "built-In " counter, power HEAD unit..
Mmmmm, seeing the Poster reminded me of days gone by....Howard had been to Holland and shipped Dutch Tiles, back home (Colerain, Ohio) for his Country Estate "Quaker Acres-1830" Kitchen restoration project. He simply insisted that he have this Nutone power Unit installed in the counter top, and it was lowered to a certain height for easy access and usage. A separate counter area just for this power head system.... The Nutone Attachments were not very well researched and small...Rather More labor skill needed than USING the actual free standing KA Mixer or Blender, slicer, etc....A new gadget for the times...1975. I think it was used a half dozen times and then just collected DUST....LOL.