MAPS-L Archives

Maps-L: Map Librarians, etc.

MAPS-L@LISTSERV.UGA.EDU
Options: Use Forum View

Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
Re: 'Un-conventional' sign on USGS 7.5 topos (fwd)
From:
Johnnie Sutherland <[log in to unmask]>
Reply To:
Maps and Air Photo Systems Forum <[log in to unmask]>
Date:
Thu, 16 Sep 1999 13:09:01 -0400
Content-Type:
TEXT/PLAIN
Parts/Attachments:
TEXT/PLAIN (55 lines) 
---------- Forwarded message ----------
Date: Thu, 16 Sep 1999 10:43:29 -0400
From: Thomas Schulz <[log in to unmask]>
To: [log in to unmask], [log in to unmask]
Subject: Re: 'Un-conventional' sign on USGS 7.5 topos (fwd)

Brian,

The symbol you are probably referring to on the USGS 7.5-minute topo maps is a geographic grid tick.  These ticks are spaced every 2.5-minutes of both Latitude and Longitude, so there are 4 on the interior of every 7.5-minute map.  You can draw a  line through the interior ticks and end up at the geographic coordinate and tick printed in the map margin.  These ticks are extremely handy to help people find the latitude and longitude of map features using commercially available pocket templates.

The USGS is currently in the process of revising the symbol brochure sheet and we have already incorporated these ticks in that revision.  The sheet should be completed sometime later this fall.

Thank you for your question.

Sincerely,
Tom Schulz

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Thomas J. Schulz,  Cartographer
US Geological Survey
National Mapping Division Standards Team
Denver, Colorado  80225
(303) 202-4568
[log in to unmask]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

>>> Johnnie Sutherland <[log in to unmask]> 9/16/99 07:55 AM >>>
---------- Forwarded message ----------
Date: Wed, 15 Sep 1999 13:00:47 -0700 (PDT)
From: [log in to unmask]
To: Maps and Air Photo Systems Forum <[log in to unmask]>
Subject: 'Un-conventional' sign on USGS 7.5 topos

I have a question regarding a sign that appears on many USGS 7.5 minute
topos, which apparently is not listed on the symbols sheet (that I could
see). It is a cross or plus sign, thusly: + except that it is larger and
printed lightly. They look like printer's registration
indicators.Any information regarding this issue would be appreciated.
Thank you,
Brian




************************0*******************************0*********************
Brian P. Bach
Maps Specialist
Documents/Maps
Central Washington University Library
400 E. 8th Ave.
Ellensburg, WA 98926-7548
USA
email:[log in to unmask]
########################X###############################X#####################

ATOM RSS1 RSS2