USGS Multimedia Gallery
Title: USGS Topographer at Work
Description: A USGS topographer works with a plane table and alidade to create a 1:180,000 scale topographic map near Imlay, Nevada. The umbrella is to protect the instrument from temperature variations.
Location: Imlay, NV, USA
Date Taken: Jan 1 1931
Usage: This image is public domain/of free use unless otherwise stated. Please refer to the USGS Copyright section for how to credit the photo.
Western Region Science Information and Library Services
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