Otoliths moved into any canal, every manoeuvre performed, and the displacement visible at each step.
Entirely the maker’s own design and manufacture. Otoliths can be driven into any semicircular canal, every repositioning manoeuvre performed, and the otoliths returned to the utricle — with their position readable at every stage.
Two differences from imported models, in his words: all canals open functionally into the utricle, and passage occurs only through the non-ampullary end, as in reality. It ships joined to a 1:1 proportioned cranium drawn by him and scaled down, so canal orientation stays legible with the head upright and in any head position.
