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Celebrating 45 Years

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Aurora Probability in Northern Canada

Auroral forecast from AuroraWatch.ca


North America Aurora Map from
NOAA Space Weather Prediction Center

Aurora Map - NOAA



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Vertigraph Demo Download
Request Form

Software to takeoff into Excel from Paper (Digitizer Based) or from
Electronic files (PDF, DWG, BMP, JPG) using BidScreen on-screen takeoff


If you are interested in downloading demonstrations or evaluations of Vertigraph products, we ask for the following information so we can follow up and ensure that your experience was satisfactory. This information is used only for follow up purposes and to send notices about Vertigraph products. We do not sell, rent or share this information. We do not enhance (link to other databases) this information.

In the event you wish to update or delete address information in our possession at any time for any reason, please contact sales at Interworld to make those changes.


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Enter your details and submit the form to access our free 2 week full version of BidScreen, Bidpoint or Siteworx Softare.

USA Office

Address: 1480 Gulf Road, Suite 837,
PO Box 1364
Point Roberts, WA 98281

Western Canada - Vancouver BC

Tel:1.800.663.6001 or 1.604.925.6150
Address: 2454 Haywood Ave
West Vancouver, BC V7V 1Y1

Eastern Canada - Markham, Ontario

Tel:1.800.465.0164 or 1.905.513.7027