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head bell

bell on head
  (+2)
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Nodding and shaking of head are common means of indicating assent or demural.

People with their eyes closed, or with their head in a bag, or blind, or behind a sofa, or looking at something distracting, cannot see nodding or shaking of head.

Person has headpiece fitted, mounted with two bells, viz. a high pitched bell oriented mouth-forward with clapper constrained to swing in a horizontal plane, and low-pitched bell mounted vertically with clapper constrained to swing forward and backwards.

Henceforth, nodding will be accompanied by low pitched sounds, and shaking of head accompanied by high pitched sounds.

pocmloc, May 07 2017

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       //common means of indicating assent or demural//   

       Not completely common. I had a Bulgarian guy working for me once, and it took quite some time to get used to the fact that in Bulgaria a head-nod means "no", whilst a head-shake means "yes".   

       Also, we really need full three-axis sensing. For instance, there is the Indian head-wobble - tilting the head back and forth about an axis that runs roughly from the nose out through the back of the head.
MaxwellBuchanan, May 07 2017
  

       Bulgarians can wear modified headsets with the bells oppositely oriented.
pocmloc, May 08 2017
  

       Needs more cowbell.
bigsleep, May 08 2017
  

       Why would this be necessary? Doesn't the rattle tip you off? Or is that only me?
RayfordSteele, May 08 2017
  

       I think high pitch for yes and low pitch for no would make more sense.
notexactly, May 09 2017
  
      
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