[accessibleimage] Re: Tactile arrows

Hello Don,

Are you asking about arrows specific to stairs or only in general?
We have set standards for arrowheads here at Purdue Univ. they are as =
follows:

The TAEVIS arrowhead is a triangular solid black fill with a 90=B0 angle =
at the tip and wide base.  The TAEVIS standard arrowhead measures as =
follows: 1/2" base, 3/8" sides, and 1/4" in height from tip to base. The =
maximum reduction for this arrowhead is 75%.  Further reduction of the =
arrowhead creates an arrow that is difficult to distinguish from a line.


Heidi Smart
TAEVIS, Tactile Graphics Specialist
Purdue University
hsmart@xxxxxxxxxx



-----Original Message-----
From: accessibleimage-bounce@xxxxxxxxxxxxx =
[mailto:accessibleimage-bounce@xxxxxxxxxxxxx] On Behalf Of Don Mccallum
Sent: Tuesday, March 01, 2005 9:12 AM
To: accessibleimage@xxxxxxxxxxxxx
Subject: [accessibleimage] Tactile arrows

Hi all,

I was wondering what experience people had with arrows (or stair =
symbols) on tactile diagrams?
For example, as anyone found any shape, design or size of arrow to be =
superior to others?
We are trying a 'saw-tooth' arrow.  Put simply, this a line that feels =
rough in one direction and smooth in the other, hopefully indicating =
direction.
Has anyone had experience with this?

Regards

Don

Don McCallum
Anglia Polytechnic University
d.j.mccallum@xxxxxxxxx
www.timp.org.uk


-----Original Message-----
From: accessibleimage-bounce@xxxxxxxxxxxxx
[mailto:accessibleimage-bounce@xxxxxxxxxxxxx]On Behalf Of Lisa Yayla
Sent: 01 March 2005 13:34
To: accessibleimage@xxxxxxxxxxxxx
Subject: [accessibleimage] Article Journal of Visual Impairments and =
Blindness


Hi,
Sending a notice about an article in the Feb 2005 issue of JVIB vol. 99 =
number 2 Tactile Graphics: An Evaluation of Substrates for Tactile Maps =
and Diagrams by Sarah Jehoe, Simon Ungar, Don McCallum and Jonathan =
Rowell.
Haven't read it yet, but surely a good read.
Regards,
Lisa

Lisa Yayla
Huseby Kompetansesenter
Oslo Norway
lisa.yayla@xxxxxxxxxx

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