I am looking for a way of easily creating raised symbols, like plus and
minus symbols. It seems like several years ago we had a device like a
writing pen that we could use to make raised symbols and letters, lines on a
map, etc. It emitted a ink-like substance that, when it dried, it could be
easily felt. I remember Palma using such a pen type device to create raised
line maps for me when I was trying to learn the layout of a new area. I
looked on the ILS and MaxiAids websites and didn't see anything like that.
Do any of you know where I can find such a device or anything similar?

 

Ron 

Dr. Ronald E. Milliman

Retired Professor of Marketing