-------- Original Message --------
Subject:        Re: Patron question regarding topo maps - square vs. rectangle
Date:   Fri, 07 Mar 2008 07:47:29 -0600
From:   Mike Flannigan <[log in to unmask]>
To:     Maps, Air Photo & Geospatial Systems Forum <[log in to unmask]>







Also, lines of longitude are not parallel.  They all converge
towards the pole.


Mike Flannigan


On Thu, 6 Mar 2008, [log in to unmask] wrote:

>-------- Original Message --------
>Subject:        Patron question regarding topo maps
>Date:   Thu, 6 Mar 2008 16:43:40 -0500
>From:   Mary Douglass <[log in to unmask]>
>To:     [log in to unmask]
>
>Hello folks,
>I think that some of you out there will be able to come up with a well
>thought out answer for this question before I can think of where to look!
>"Why on a 7.5 minute USGS Topo isn't the area map square? Since the map is
>7.5 minutes X 7.5 minutes, it should be square. The map clearly is not
>square and appears rectangular. Can you help with this dilemma?"
>I've told the patron that I'm sending the question out to the "experts".
>
>Mary Douglass
>History, Travel and Maps Department at Seattle Public Library