There are many audio levelers which is great for the blind-hearing users,

It is no good for the deaf-blind users.

I think Tactile Leverler is gone.

Unless you know where I could buy one?

Otherwise you have a good hint?  I was using  the water filled in the
bottle and put it on griddle pan.  It could level the floor only. But not
for wall (90 degree, right angle).

Leslie--
The deaf-blind man


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