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James W. Sewall


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Engineers & sURVEYORS

The Challenge

To expedite their construction and design projects, engineering and surveying firms need accurate mapping of their project sites quickly and at reasonable cost.

Aerial Mapping Solutions

With competitive pricing and rapid project turnaround, Sewall can supply current data in a matter of days to meet a wide range of project requirements, from planimetric/topographic mapping to volumetric measurement, infrastructure location, and digital orthophotography. For over 70 years, we have provided our A/E clients with high-quality aerial photography and photogrammetric mapping. One of the oldest aerial mapping firms in New England, Sewall has the staff and technologies to provide flexible, fast service at competitive pricing.

The Benefits

  • High quality data. Highly accurate remote sensing, mapping, and digital orthoimagery help engineering and surveying firms design, develop, and manage their projects wisely. Our airborne GPS and IMU technology can significantly reduce ground control requirements.
  • Fast Delivery. We offer rapid turnaround on mapping projects, depending upon the date of acceptable survey control and photography.
  • Responsive, Competitive Pricing. Our pricing is based on specified scale, film color, pixel resolution, and contours.
  • Reliable Service. We provide the value that our clients expect. Knowledgeable staff and a legacy in accurate data will ensure project success.
Engineer on site

More Info

Remote sensing


Surveying (PDF)

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Brett Hart, PE
Vice President of Engineering
207 817 5455

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