Dear Martin,
I don't know the roller-pulley system you described but can't tell from the photo if these people were using another non-grid finding aid. The Library of Congress describes a 1992 Champion map of Buffalo and Niagara Falls, New York as a wall map designed for use with radial index tape-measure. https://lccn.loc.gov/93685367 Positioning the the tape in specific directions helped people find locations a specific distance from the center/centre. For some, this was easier to use than the alpha-numeric grid system employed by some map companies.
John Stevenson
On Tue, Aug 29, 2017 at 4:40 AM, martin dodge <[log in to unmask]> wrote:
Hello
I am interested if anyone on the list remembers city centre tourist maps, displayed on large poster boards in public places from the 1950s/60s era.
A colleague mentioned that he remembers them in Manchester and they included some kind of roller-pulley system that allowed people to move a selection pointer around on the map.
I think the attached photograph might be showing what this kind of map but its not very clear. Its also online at
http://www.gmlives.org.uk/imu/request.php?request=Multimedia &method=fetch&key=4869
Any information gratefully received.
many thanks
Martin Dodge
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Department of Geography
University of Manchester
Oxford Rd
Manchester, M13 9PL
UK
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John A. StevensonAssociate Librarian and Interim Head, Multimedia Collections and Services Department
University of Delaware Library
181 S. College Ave.
Newark, DE 19717-5267
302 831-8671