Raster Background Data for PC-GPS 

Geotiffed DRG and DOQQ images, ready to use in PC-GPS

If you have a question or technical issue that is not addressed by this section, please contact us at support@cmtinc.com

CMT Custom Image CDs

USGS 7.5' quadrangles are now available in digital format that can be used by PC-GPS.   These DRGs (Digital Raster Graphics) are available for the entire United States.   See example below. 

Also available are aerial photos (DOQQs - Digital Orthophoto Quarter Quads).   Approximately 50% of the U.S. is covered; with more being added each month.   Four of these cover the same area as one DRG.  See Example below.

Let us make a custom CD-ROM for you with the DRG's and DOQQs you need.  The DRGs and DOQQs, are in PC-GPS .MAP format so you can just use File/Open in PC-GPS to display the DRG or DOQQ.  You can then copy your GPS data right on top of the image.

With this data you can:

  • Display your GPS/GIS data on top of USGS quadrangles and aerial photos.
  • "heads-up" digitize on the image using your mouse.  Create new points, lines and areas by tracing them on the image.
  • connect your GPS unit to your notebook computer or pen-based computer along with PC-GPS and watch your position on the DRG/DOQQ as you move.

DRG Image (to scale)
webdrg.gif (39655 bytes)

DOQQ Image (to scale)

Call one of our Sales Representatives for a quote on a custom CD today!
Just let us know the names of the 7.5' quadrangles you need.

Custom CD Pricing

1st 7.5' quadrangle on CDROM....... $30.00
Each additional 7.5' quadrangle on the same CD-ROM.......
(Maximum of 60 7.5' quadrangles on each CD-ROM)
1st Digital Orthophoto Quarter Quad on CD-ROM....... $40.00
Each additional DOQQ on the same CD-ROM.......
(Maximum of 10  B/W DOQQs on each CD-ROM)
(pricing only applies to b/w images)


Online DRG Search
Use CMT's fast image search engine to customize your DRG CD online. Please send your order to us by mail or FAX.

           Go to CMT Online DRG Search

413 SW Jefferson Ave.
Corvallis, OR 97333 USA
Fax  541.752.4117
?Corvallis Microtechnology, Inc. 2007
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